https://www.khanacademy.org/math/revision-mh-math-class-6/x01cb2212e31ce997:week-1/x01cb2212e31ce997:basic-concepts-in-geometry/v/lines-line-segments-rays-indian-accent 2025-06-04T10:04:13.13703146Z Lines, line segments, & rays Learn the difference between lines, line segments, and rays.  Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Lines, line segments, & rays Learn the difference between lines, line segments, and rays.  https://cdn.kastatic.org/ka-youtube-converted/xNWmto_kwzk.mp4/xNWmto_kwzk.mp4 218 Lines and angles https://www.khanacademy.org/math/revision-mh-math-class-6/x01cb2212e31ce997:week-1/x01cb2212e31ce997:basic-concepts-in-geometry/v/parallel-perpendicular-lines-intro-indian-accent 2025-05-30T05:30:36.604331212Z Parallel & perpendicular lines intro Parallel lines never intersect, and perpendicular lines intersect at a 90 degree angle. Learn how to identify parallel and perpendicular lines. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Parallel & perpendicular lines intro Parallel lines never intersect, and perpendicular lines intersect at a 90 degree angle. Learn how to identify parallel and perpendicular lines. https://cdn.kastatic.org/ka-youtube-converted/pyAVf_K2vME.mp4/pyAVf_K2vME.mp4 129 Lines and angles https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:lines-and-angles/x06d55bfa213a79fd:pairs-of-angles/v/adjacent-angles-linear-pair-of-angles 2024-12-30T04:13:21.517132104Z Adjacent angles, linear pair of angles This video explains different pair of angles such as adjacent pair of angles, linear pair of angles, vertically opposite pair of angles, the definitions and properties of such pairs. Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Adjacent angles, linear pair of angles This video explains different pair of angles such as adjacent pair of angles, linear pair of angles, vertically opposite pair of angles, the definitions and properties of such pairs. https://cdn.kastatic.org/ka-youtube-converted/hMYV-Pp3Li0.mp4/hMYV-Pp3Li0.mp4 382 Lines and angles https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:parallel-and-intersecting-lines/x063f95a40c290960:across-the-line/v/vertical-angles-indian-accent 2025-06-06T15:33:38.563209632Z Vertical angles By using our knowledge of supplementary, adjacent, and vertical angles, we can solve problems involving the intersection of two lines. Including this one! Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Vertical angles By using our knowledge of supplementary, adjacent, and vertical angles, we can solve problems involving the intersection of two lines. Including this one! https://cdn.kastatic.org/ka-youtube-converted/_ZsU8PAwedc.mp4/_ZsU8PAwedc.mp4 438 Lines and angles https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:parallel-and-intersecting-lines/x063f95a40c290960:parallel-lines-and-transversal/v/missing-angles-with-a-transversal-indian-accent 2025-06-04T10:04:13.13703146Z Missing angles with a transversal When a third line called a transversal crosses two parallel lines, we can find the measures of angles using properties like corresponding angles, vertical angles, and supplementary angles. If we know just one of the angle measurements, these properties help us find all the missing angle measurements. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Missing angles with a transversal When a third line called a transversal crosses two parallel lines, we can find the measures of angles using properties like corresponding angles, vertical angles, and supplementary angles. If we know just one of the angle measurements, these properties help us find all the missing angle measurements. https://cdn.kastatic.org/ka-youtube-converted/I3mNis-YPG8.mp4/I3mNis-YPG8.mp4 137 Lines and angles https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/cc-8th-angles-between-lines/v/using-algebra-to-find-measures-of-angles-formed-from-transversal 2025-06-10T12:18:12.264638758Z Measures of angles formed by a transversal When parallel lines are crossed by another line called a transversal, special angles are formed. We can find the measures of these angles using algebra and the relationships between the angles, like congruent angles and supplementary angles. Once we solve for the variable, we use that value to figure out the angle measures. Sal Khan video https://cdn.kastatic.org/googleusercontent/jH5ENXnD6D-PN3MBbpChj1DItsL6-IBBlBy4CSWjNhZisvLGEEEuEoyVVhW6tRAfsndWS8O7Q7v4u9lIu_ugTO9D Measures of angles formed by a transversal When parallel lines are crossed by another line called a transversal, special angles are formed. We can find the measures of these angles using algebra and the relationships between the angles, like congruent angles and supplementary angles. Once we solve for the variable, we use that value to figure out the angle measures. https://cdn.kastatic.org/ka-youtube-converted/Ld7Vxb5XV6A.mp4/Ld7Vxb5XV6A.mp4 281 Lines and angles https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:a-tale-of-three-intersecting-lines/x063f95a40c290960:properties-of-triangles-part-2/v/exterior-angle-property-of-a-triangle 2024-05-28T09:47:20.658952794Z Exterior angle property of a triangle We look at the exterior angle property of the triangle and a quick problem on how to apply it. Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Exterior angle property of a triangle We look at the exterior angle property of the triangle and a quick problem on how to apply it. https://cdn.kastatic.org/ka-youtube-converted/RFKQq6yvRSc.mp4/RFKQq6yvRSc.mp4 263 Lines and angles https://www.khanacademy.org/math/revision-tg-math-class-9/x6c9499d6e7016acd:week-1/x6c9499d6e7016acd:lines-and-angles/e/revision-lines-and-angles-tg-class-9 2026-02-18T21:20:35.275198076Z Revision lines and angles TG class 9 . Khan Academy exercise