https://www.khanacademy.org/math/revision-term-1-mh-math-class-8/x0c43044bb5624863:week-2/x0c43044bb5624863:altitudes-and-median-of-triangles/v/what-are-altitudes-of-triangle 2024-05-28T09:47:20.658952794Z What are altitudes of triangle In this video we discuss what is an altitude of a triangle and how we can draw/identitfy different altitudes of the triangle Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw What are altitudes of triangle In this video we discuss what is an altitude of a triangle and how we can draw/identitfy different altitudes of the triangle https://cdn.kastatic.org/ka-youtube-converted/X2v5aCK5ZoI.mp4/X2v5aCK5ZoI.mp4 206 The triangle and its properties https://www.khanacademy.org/districts-courses/geometry-scps-pilot-textbook/x398e4b4a0a333d18:properties-and-attributes-of-triangles/x398e4b4a0a333d18:medians-and-altitudes-of-triangles/v/intro-to-medians-of-a-triangle-class-7-india-math-khan-academy 2021-07-02T09:35:35Z Intro to medians of a triangle Let's get introduced to medians of a triangle and learn what centroids are. Aanand Srinivas video https://cdn.kastatic.org/googleusercontent/t7OPUsgVEIuYj41K54WrfklJHYd53UanJSJy1-buyZqs7XSIOtz2ZajmyOuocKoTtELjjxKf0bqFxqSomwA-11ZNuA Intro to medians of a triangle Let's get introduced to medians of a triangle and learn what centroids are. https://cdn.kastatic.org/ka-youtube-converted/cr92Xwb4CoA.mp4/cr92Xwb4CoA.mp4 328 The triangle and its properties https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-congruence-theorems/v/triangle-angle-example-1 2023-06-02T19:09:07.369858129Z Triangle exterior angle example An exterior angle is formed outside a triangle by extending a side. Its measure is equal to the sum of the two non-adjacent interior angle measures, thanks to the fact that all angle measures in a triangle add up to 180 degrees. Sal Khan video https://cdn.kastatic.org/googleusercontent/wLp2r0BNUUczDRaf0FEYElR-f16JqkKrGUXqmRV93k5fLjL3OY9okjdUz_do9oPMYQ6F7w7Q2DEqiHXfD9snNWDTPQ Triangle exterior angle example An exterior angle is formed outside a triangle by extending a side. Its measure is equal to the sum of the two non-adjacent interior angle measures, thanks to the fact that all angle measures in a triangle add up to 180 degrees. https://cdn.kastatic.org/ka-youtube-converted/hmj3_zbz2eg.mp4/hmj3_zbz2eg.mp4 363 The triangle and its properties https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/cc-8th-triangle-angles/v/triangle-angle-example-2 2023-06-02T19:09:07.369858129Z Worked example: Triangle angles (intersecting lines) Learn how to find unknown angles in triangles and intersecting lines. We use concepts like supplementary angles (angles that add up to 180°), vertical angles (opposite angles made by two crossing lines), and exterior angles (angles outside a triangle). There are lots of ways to think about this problem. Sal Khan video https://cdn.kastatic.org/googleusercontent/zGCHqinDWdb7VUFyJHlpvrcCfW_SjkBC1_ufAhF6ZiA9cRZUoXqIwEIpXHI_RdNUYD3l68G9LtVPPZuUkfjUcqA Worked example: Triangle angles (intersecting lines) Learn how to find unknown angles in triangles and intersecting lines. We use concepts like supplementary angles (angles that add up to 180°), vertical angles (opposite angles made by two crossing lines), and exterior angles (angles outside a triangle). There are lots of ways to think about this problem. https://cdn.kastatic.org/ka-youtube-converted/eTwnt4G5xE4.mp4/eTwnt4G5xE4.mp4 295 The triangle and its properties https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:geometric-twins/x063f95a40c290960:angles-of-isosceles-and-equilateral-triangles/v/equilateral-and-isosceles-triangles 2024-05-28T09:47:20.658952794Z Equilateral and Isosceles triangles In this video we discuss the properties of the equilateral and isosceles triangles. Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Equilateral and Isosceles triangles In this video we discuss the properties of the equilateral and isosceles triangles. https://cdn.kastatic.org/ka-youtube-converted/yD48aFuG0fU.mp4/yD48aFuG0fU.mp4 137 The triangle and its properties https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-geometry/cc-7th-constructing-geometric-shapes/v/triangle-inqequality-theorem 2021-07-02T09:35:27Z Triangle inequality theorem Intuition behind the triangle inequality theorem Sal Khan video https://cdn.kastatic.org/googleusercontent/HVpDfgDPIvUqFIbXtljJrLuUlHyeiWRomrkj6JeKGb5TPNgSbX0u_nX0Aj7RYaPpLreDkNourl80NDiBdD8tPeQ Triangle inequality theorem Intuition behind the triangle inequality theorem https://cdn.kastatic.org/ka-youtube-converted/KlKYvbigBqs.mp4/KlKYvbigBqs.mp4 352 The triangle and its properties https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/cc-8th-pythagorean-theorem/v/the-pythagorean-theorem 2023-05-23T10:21:00.469536483Z Intro to the Pythagorean theorem The Pythagorean theorem is a cornerstone of math that helps us find the missing side length of a right triangle. In a right triangle with sides A, B, and hypotenuse C, the theorem states that A² + B² = C². The hypotenuse is the longest side, opposite the right angle. Sal Khan video https://cdn.kastatic.org/googleusercontent/zm9lxg5aZkInLh29lDFE0ccgsSaxlQuzX0ogkP6IbAwcTeapeXzOpPLaFNmpA6WAoS_PhTCuQDrDMou_Wqr5Y4nf Intro to the Pythagorean theorem The Pythagorean theorem is a cornerstone of math that helps us find the missing side length of a right triangle. In a right triangle with sides A, B, and hypotenuse C, the theorem states that A² + B² = C². The hypotenuse is the longest side, opposite the right angle. https://cdn.kastatic.org/ka-youtube-converted/AA6RfgP-AHU.mp4/AA6RfgP-AHU.mp4 646 The triangle and its properties https://www.khanacademy.org/math/up-sw-revision-ncert-class-7-math/x878ebb49a453e5a0:week-2/x878ebb49a453e5a0:the-triangle-and-its-properties/e/the-triangle-and-its-properties-revision-ncert7 2026-04-08T01:15:04.085520103Z The triangle and its properties revision ncert7 . Devashish Phadnis exercise