https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:quadrilaterals/x06d55bfa213a79fd:properties-of-parallelograms/v/proof-opposite-sides-of-a-parallelogram-indian-accent 2025-06-04T10:04:13.13703146Z Proof: Opposite sides of a parallelogram Sal proves that a figure is a parallelogram if and only if opposite sides are congruent. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Proof: Opposite sides of a parallelogram Sal proves that a figure is a parallelogram if and only if opposite sides are congruent. https://cdn.kastatic.org/ka-youtube-converted/gtDZ9hSKSUA.mp4/gtDZ9hSKSUA.mp4 509 Kinds of quadrilaterals https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:quadrilaterals/x06d55bfa213a79fd:properties-of-parallelograms/v/proof-opposite-angles-of-a-parallelogram-indian-accent 2025-06-04T10:04:13.13703146Z Proof: Opposite angles of a parallelogram Sal proves that opposite angles of a parallelogram are congruent. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Proof: Opposite angles of a parallelogram Sal proves that opposite angles of a parallelogram are congruent. https://cdn.kastatic.org/ka-youtube-converted/60-kf3Cluvc.mp4/60-kf3Cluvc.mp4 248 Kinds of quadrilaterals https://www.khanacademy.org/math/uk-math-class-8/x40384ea0c3a0cfc9:understanding-quadrilaterals-ncert-new/x40384ea0c3a0cfc9:kinds-of-quadrilaterals/v/proof-sum-of-adjacent-angles-of-parallelogram 2025-05-15T14:44:06.823245258Z Proof: Sum of adjacent angles of parallelogram In this video, we explore a fundamental property of parallelograms: the fact that adjacent angles are always supplementary. Through a clear and methodical proof, we demonstrate that the sum of any two adjacent angles in a parallelogram equals 180 degrees. By using essential geometric concepts and logical reasoning, we break down why this property holds true in every case. Mahak Wasan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Proof: Sum of adjacent angles of parallelogram In this video, we explore a fundamental property of parallelograms: the fact that adjacent angles are always supplementary. Through a clear and methodical proof, we demonstrate that the sum of any two adjacent angles in a parallelogram equals 180 degrees. By using essential geometric concepts and logical reasoning, we break down why this property holds true in every case. https://cdn.kastatic.org/ka-youtube-converted/YxeYR1x-jfA.mp4/YxeYR1x-jfA.mp4 129 Kinds of quadrilaterals https://www.khanacademy.org/math/5th-grade-math-eureka-squared-aligned/xaf06646de8e27a4f:addition-and-multiplication-with-area-and-volume/xaf06646de8e27a4f:classify-kites-and-squares-based-on-their-properties/v/kites-as-a-geometric-shape-indian-accent 2025-06-04T10:04:13.13703146Z Kites as a geometric shape The video dives into the world of quadrilaterals, specifically focusing on kites. It explores how kites are defined by two pairs of adjacent, congruent sides. It also highlights that the diagonals of a kite intersect at a 90-degree angle, with one line bisecting the other. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Kites as a geometric shape The video dives into the world of quadrilaterals, specifically focusing on kites. It explores how kites are defined by two pairs of adjacent, congruent sides. It also highlights that the diagonals of a kite intersect at a 90-degree angle, with one line bisecting the other. https://cdn.kastatic.org/ka-youtube-converted/-NWighBs6IU.mp4/-NWighBs6IU.mp4 338 Kinds of quadrilaterals https://www.khanacademy.org/districts-courses/geometry-scps-pilot-textbook/x398e4b4a0a333d18:polygons-and-quadrilaterals/x398e4b4a0a333d18:properties-of-parallelograms/e/using-properties-basic-8th 2026-03-07T07:20:41.87360937Z Side and angle properties of a parallelogram (level 1) Side and angle properties of a parallelogram (level 1) supriya exercise https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:quadrilaterals/x06d55bfa213a79fd:diagonals-of-a-parallelogram/v/proof-diagonals-of-a-parallelogram-indian-accent 2025-06-04T10:04:13.13703146Z Proof: Diagonals of a parallelogram Sal proves that a quadrilateral is a parallelogram if and only if its diagonals bisect each other. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Proof: Diagonals of a parallelogram Sal proves that a quadrilateral is a parallelogram if and only if its diagonals bisect each other. https://cdn.kastatic.org/ka-youtube-converted/9gAh2lFz5FI.mp4/9gAh2lFz5FI.mp4 547 Kinds of quadrilaterals https://www.khanacademy.org/districts-courses/geometry-scps-pilot-textbook/x398e4b4a0a333d18:polygons-and-quadrilaterals/x398e4b4a0a333d18:properties-of-parallelograms/e/regular-polygons-advanced-8th 2026-04-07T23:17:37.123726494Z Diagonal properties of parallelogram Polygons advanced supriya exercise