{"id":134,"date":"2022-04-13T08:26:42","date_gmt":"2022-04-13T08:26:42","guid":{"rendered":"http:\/\/9thclass.deltapublications.in\/?page_id=134"},"modified":"2025-10-31T10:34:53","modified_gmt":"2025-10-31T10:34:53","slug":"h-5-properties-of-rhombuses","status":"publish","type":"page","link":"https:\/\/9thclass.deltapublications.in\/index.php\/h-5-properties-of-rhombuses\/","title":{"rendered":"H.5 Properties of rhombuses"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Properties of rhombuses<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div style=\"position: relative; width: 100%; height: 0; padding-top: 56.2500%;\n padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;\n border-radius: 8px; will-change: transform;\">\n  <iframe loading=\"lazy\" style=\"position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;\"\n    src=\"https:\/\/www.canva.com\/design\/DAG3WnWqm8k\/KsXoHPxJk1aM5p-b1m4hJQ\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAG3WnWqm8k&#x2F;KsXoHPxJk1aM5p-b1m4hJQ&#x2F;watch?utm_content=DAG3WnWqm8k&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">Design<\/a> by Delta publications\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b;text-transform:capitalize\"><strong>key notes :<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-fbbd484cc2df2890ac96c3e787c4a595\" style=\"color:#000060\">\ud83d\udd37 <strong>Definition<\/strong><\/h3>\n\n\n\n<p>A <strong>rhombus<\/strong> is a <strong>special type of parallelogram<\/strong> where <strong>all four sides are equal<\/strong> in length.<br>\ud83d\udc49 It looks like a \u201ctilted square.\u201d<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-b144c88b0b3668e61a4e5f6dc38ded31\" style=\"color:#000060\">\ud83d\udfe9 <strong>Properties of a Rhombus<\/strong><\/h3>\n\n\n\n<p>1\ufe0f\u20e3 <strong>All sides are equal<\/strong> \ud83d\udc8e<br>\u27a1\ufe0f AB = BC = CD = DA<\/p>\n\n\n\n<p>2\ufe0f\u20e3 <strong>Opposite angles are equal<\/strong> \ud83c\udfaf<br>\u27a1\ufe0f \u2220A = \u2220C and \u2220B = \u2220D<\/p>\n\n\n\n<p>3\ufe0f\u20e3 <strong>Diagonals bisect each other at right angles<\/strong> \u2716\ufe0f<br>\u27a1\ufe0f The diagonals intersect at 90<sup>\u2218<\/sup>.<\/p>\n\n\n\n<p>4\ufe0f\u20e3 <strong>Diagonals bisect the vertex angles<\/strong> \ud83e\udded<br>\u27a1\ufe0f Each diagonal cuts the opposite angles into two equal parts.<\/p>\n\n\n\n<p>5\ufe0f\u20e3 <strong>Opposite sides are parallel<\/strong> \ud83e\uddee<br>\u27a1\ufe0f AB \u2225 CD and AD \u2225 BC<\/p>\n\n\n\n<p>6\ufe0f\u20e3 <strong>Each diagonal divides the rhombus into two congruent triangles<\/strong> \ud83d\udd3a\ud83d\udd3a<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-1151e84a0845ca4f1b0d973508074c06\" style=\"color:#000060\">\ud83e\udde0 <strong>Formulas to Remember<\/strong><\/h3>\n\n\n\n<p>\ud83d\udccf <strong>Area of a rhombus:<\/strong> <\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>Area = 1 \/ 2 \u00d7 d<sub>1<\/sub> \u00d7 d<sub>2<\/sub><\/strong><\/p>\n\n\n\n<p>(where d<sub>1\u200b <\/sub>and d<sub>2<\/sub>\u200b are the diagonals)<\/p>\n\n\n\n<p>\ud83d\udcd0 <strong>Perimeter of a rhombus:<\/strong> <\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>Perimeter = 4 \u00d7 side<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-53a5881c9c7b0c1d3a4ceaffe4565cc0\" style=\"color:#000060\">\ud83d\udca1 <strong>Special Notes<\/strong><\/h3>\n\n\n\n<p>\u2728 Every <strong>square<\/strong> is a rhombus, but <strong>not every rhombus<\/strong> is a square.<br>\u2728 Rhombus is a <strong>type of parallelogram<\/strong>, and also a <strong>type of kite<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-59bbc9c029c5038399f97eff8bd8b5f6\" style=\"color:#000060\">\ud83c\udfa8 <strong>Visual Memory Trick<\/strong><\/h3>\n\n\n\n<p>\ud83d\udd38 Think of a rhombus as a <strong>diamond-shaped square<\/strong>! \ud83d\udc8e<br>\ud83d\udd39 Equal sides like a square,<br>\ud83d\udd39 Diagonals like an \u201cX\u201d at 90\u00b0.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-77655c9138492d74767ae7233b107a73\" style=\"color:#000060\">\ud83c\udf08 <strong>Summary Chart<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Property \ud83e\udde9<\/th><th>Description \ud83d\udcd6<\/th><\/tr><\/thead><tbody><tr><td>Sides<\/td><td>All four sides are equal<\/td><\/tr><tr><td>Angles<\/td><td>Opposite angles are equal<\/td><\/tr><tr><td>Diagonals<\/td><td>Bisect each other at 90\u00b0<\/td><\/tr><tr><td>Parallels<\/td><td>Opposite sides are parallel<\/td><\/tr><tr><td>Symmetry<\/td><td>Two lines of symmetry<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-text-align-center has-text-color has-large-font-size\" style=\"color:#105000\"><strong>Learn with an example<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group has-background has-large-font-size\" style=\"background-color:#c7fae4\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-background-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color\" style=\"color:#b00012\"><strong>Quadrilateral QRST is a rhombus. What is \u2220PRS?<\/strong><\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-9.png\" alt=\"\" class=\"wp-image-8592\" style=\"width:304px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-9.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-9-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-9-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>\u2220PRS = ____\u00b0<\/p>\n<\/div><\/div>\n\n\n\n<p>Since QRST is a rhombus, opposite angles are congruent, QS bisects \u2220RQT, and RT bisects \u2220QRS.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.-removebg-preview-2.png\" alt=\"\" class=\"wp-image-8593\" style=\"width:272px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.-removebg-preview-2.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.-removebg-preview-2-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.-removebg-preview-2-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>So, \u2220PQR \u2245 \u2220PQT \u2245 \u2220PSR \u2245 \u2220PST and \u2220PRQ \u2245 \u2220PRS \u2245 \u2220PTQ \u2245 \u2220PTS. Specifically \u2220PQR = \u2220PSR = 36\u00b0. Also, since QS and RT are perpendicular, \u2220RPS = 90\u00b0 and \u25b3PRS is a right triangle.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__1_-removebg-preview-2.png\" alt=\"\" class=\"wp-image-8594\" style=\"width:284px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__1_-removebg-preview-2.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__1_-removebg-preview-2-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__1_-removebg-preview-2-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>This means \u2220PRS and \u2220PSR are complementary. Set the sum of their measures equal to 90\u00b0 and plug in \u2220PSR = 36\u00b0 to solve for \u2220PRS.<\/p>\n\n\n\n<p>\u2220PRS + \u2220PSR = 90\u00b0<\/p>\n\n\n\n<p>\u2220PRS + 36\u00b0 = 90\u00b0 Plug in \u2220PSR = 36\u00b0<\/p>\n\n\n\n<p>\u2220PRS = 54\u00b0 Subtract 36\u00b0 from both sides<\/p>\n\n\n\n<p>So, \u2220PRS = 54\u00b0.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background has-large-font-size\" style=\"background-color:#f9d4d4\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-background-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color\" style=\"color:#b00012\"><strong>Quadrilateral GHIJ is a rhombus. What is \u2220JIK?<\/strong><\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-2.png\" alt=\"\" class=\"wp-image-8595\" style=\"width:302px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-2.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-2-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-2-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>\u2220JIK = ______\u00b0<\/p>\n<\/div><\/div>\n\n\n\n<p>Since GHIJ is a rhombus, opposite angles are congruent, GI bisects \u2220HIJ, and HJ bisects \u2220GHI.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__2_-removebg-preview-2.png\" alt=\"\" class=\"wp-image-8596\" style=\"width:312px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__2_-removebg-preview-2.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__2_-removebg-preview-2-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__2_-removebg-preview-2-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>So, \u2220IHK \u2245 \u2220GHK \u2245 \u2220GJK \u2245 \u2220IJK and \u2220HGK \u2245 \u2220HIK \u2245 \u2220JGK \u2245 \u2220JIK. Specifically \u2220IHK = \u2220IJK = 31\u00b0. Also, since GI and HJ are perpendicular, \u2220IKJ = 90\u00b0 and \u25b3IJK is a right triangle.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__3_-removebg-preview-2.png\" alt=\"\" class=\"wp-image-8597\" style=\"width:310px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__3_-removebg-preview-2.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__3_-removebg-preview-2-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__3_-removebg-preview-2-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>This means \u2220IJK and \u2220JIK are complementary. Set the sum of their measures equal to 90\u00b0 and plug in \u2220IJK = 31\u00b0 to solve for \u2220JIK.<\/p>\n\n\n\n<p>\u2220IJK + \u2220JIK = 90\u00b0<\/p>\n\n\n\n<p>31\u00b0 + \u2220JIK = 90\u00b0 Plug in \u2220IJK = 31\u00b0<\/p>\n\n\n\n<p>\u2220JIK = 59\u00b0 Subtract 31\u00b0 from both sides<\/p>\n\n\n\n<p>So, \u2220JIK = 59\u00b0.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background has-large-font-size\" style=\"background-color:#e2f5c9\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-background-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color\" style=\"color:#b00012\"><strong>Quadrilateral ABCD is a rhombus. What is \u2220ACD?<\/strong><\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-4-2.png\" alt=\"\" class=\"wp-image-8600\" style=\"width:314px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-4-2.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-4-2-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph-the-square-with-vertices-\u2013-49-94-4-\u2013-9-and-\u2013-9-\u2013-4.-4-2-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>\u2220ACD= _____\u00b0<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<p>Since ABCD is a rhombus, \u2220BCD and \u2220ABC are supplementary.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__4_-removebg-preview-1.png\" alt=\"\" class=\"wp-image-8601\" style=\"width:326px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__4_-removebg-preview-1.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__4_-removebg-preview-1-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Graph_the_square_with_vertices_____4_9____9_4____4____9__and_____9____4_.__4_-removebg-preview-1-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>Set the sum of their measures equal to 180\u00b0 and plug in \u2220ABC to solve for \u2220BCD.<\/p>\n\n\n\n<p>\u2220ABC + \u2220BCD = 180\u00b0<\/p>\n\n\n\n<p>62\u00b0 + \u2220BCD = 180\u00b0 Plug in \u2220ABC = 62\u00b0<\/p>\n\n\n\n<p>\u2220BCD = 118\u00b0                  Subtract 62\u00b0 from both sides<\/p>\n\n\n\n<p>Also, AC bisects \u2220BCD, so \u2220ACD = \u2220ACB = 1\/2 \u2220BCD. Next, plug in \u2220BCD = 118\u00b0 to this equation and solve for \u2220ACD.<\/p>\n\n\n\n<p>\u2220ACD = 1\/2 . \u2220BCD<\/p>\n\n\n\n<p>= 1\/2 (118\u00b0) Plug in \u2220BCD = 118\u00b0<\/p>\n\n\n\n<p>= 59\u00b0                   Multiply<\/p>\n\n\n\n<p>So, \u2220ACD=59\u00b0.<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\">Let&#8217;s practice!<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/84792\/216\/174\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-3-39.png\" alt=\"\" class=\"wp-image-7792\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-3-39.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-3-39-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-3-39-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/85171\/937\/483\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-2-48.png\" alt=\"\" class=\"wp-image-7793\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-2-48.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-2-48-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-2-48-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Properties of rhombuses Design by Delta publications key notes : \ud83d\udd37 Definition A rhombus is a special type of parallelogram where all four sides are equal in length.\ud83d\udc49 It looks like a \u201ctilted square.\u201d \ud83d\udfe9 Properties of a Rhombus 1\ufe0f\u20e3 All sides are equal \ud83d\udc8e\u27a1\ufe0f AB = BC = CD = DA 2\ufe0f\u20e3 Opposite angles<a class=\"more-link\" href=\"https:\/\/9thclass.deltapublications.in\/index.php\/h-5-properties-of-rhombuses\/\">Continue reading <span class=\"screen-reader-text\">&#8220;H.5 Properties of rhombuses&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-134","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=134"}],"version-history":[{"count":28,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/134\/revisions"}],"predecessor-version":[{"id":18173,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/134\/revisions\/18173"}],"wp:attachment":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}