https://hi.khanacademy.org/math/ncert-class-9/x2757d6348a04b24e:quadrilaterals-ncert-new/x2757d6348a04b24e:properties-of-parallelograms/v/proof-opposite-sides-of-a-parallelogram-indian-accent 2025-06-25T04:41:42.443170091Z उपपत्ति: एक समांतर चतुर्भुज की सम्मुख भुजाएँ (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 उपपत्ति: एक समांतर चतुर्भुज की सम्मुख भुजाएँ (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/HjkhJ7GCGYw.mp4/HjkhJ7GCGYw.mp4 509 समांतर चतुर्भुज के गुण https://hi.khanacademy.org/math/ncert-class-9/x2757d6348a04b24e:quadrilaterals-ncert-new/x2757d6348a04b24e:properties-of-parallelograms/v/proof-opposite-angles-of-a-parallelogram-indian-accent 2025-06-25T04:41:42.443170091Z उपपत्ति: समांतर चतुर्भुज के सम्मुख कोण (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 उपपत्ति: समांतर चतुर्भुज के सम्मुख कोण (Proof: Opposite angles of a parallelogram) Sal proves that opposite angles of a parallelogram are congruent. https://cdn.kastatic.org/ka-youtube-converted/DzEBE3Kwl6Y.mp4/DzEBE3Kwl6Y.mp4 248 समांतर चतुर्भुज के गुण https://hi.khanacademy.org/math/ncert-class-9/x2757d6348a04b24e:quadrilaterals-ncert-new/x2757d6348a04b24e:properties-of-parallelograms/v/proof-diagonals-of-a-parallelogram-indian-accent 2025-06-25T04:35:10.093609016Z उपपत्ति: समांतर चतुर्भुज के विकर्ण (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 उपपत्ति: समांतर चतुर्भुज के विकर्ण (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/jLikEjG9mM0.mp4/jLikEjG9mM0.mp4 547 समांतर चतुर्भुज के गुण https://hi.khanacademy.org/math/ncert-class-9/x2757d6348a04b24e:quadrilaterals-ncert-new/x2757d6348a04b24e:properties-of-parallelograms/e/quadrilaterals-10-c 2025-09-29T17:46:31.800503757Z समांतर चतुर्भुज के गुण (Properties of parallelogram) चतुर्भुज (Quadrilaterals) ashish exercise https://hi.khanacademy.org/math/in-in-grade-9-ncert/xfd53e0255cd302f8:quadrilaterals/xfd53e0255cd302f8:proofs-parallelograms/e/diagonal-properties-of-quadrilaterals-8th 2025-03-04T10:38:45.731137987Z समांतर चतुर्भुज के कोण एवं भुजाओं के गुण (स्तर 2) समांतर चतुर्भुज के कोण एवं भुजाओं के गुण (स्तर 2) supriya exercise https://hi.khanacademy.org/math/ncert-class-9/x2757d6348a04b24e:quadrilaterals-ncert-new/x2757d6348a04b24e:properties-of-parallelograms/e/properties-of-diagonals-of-parallelogram 2025-09-29T17:46:31.800503757Z समांतर चतुर्भुज के विकर्णों के गुण यह अभ्यास नई ncert के चतुर्भुज अध्याय के लिए तैयार किया गया है और दिए गए सवाल विकर्ण के गुणों के बारे में हैं। Devashish Phadnis exercise