Geometry – Opposite sides of a Parallelogram parallel and equal - Proof – English

Proof: Opposite sides of parallelogram congruent | Quadrilaterals | Geometry | Khan Academy

ユークリッド幾何学 10年生: 対辺平行四辺形

Opposite Sides of Parallelogram Theorem

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Theorem 8: A Quadrilateral is a Parallelogram if a pair of opposite sides is Equal and Parallel.

証明：平行四辺形の対角は合同｜四辺形｜幾何学｜カーンアカデミー

Parallelogram | Opposite sides are Equal and Parallel | Class 8 | ICSE | CBSE

OPPOSITE SIDES OF A PARALLELOGRAM ARE EQUAL!

prove that opposite side of parallelogram are equal

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Theorem: In a Parallelogram, opposite sides are equal | LECTURE 7 | QUADRILATERAL SERIES

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Opposite Sides in a Parallelogram are Equal || Class 8 Maths ICSE ||

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ユークリッド幾何学 10年生: 対角線 平行四辺形の二等分

prove that aquadrilateral is a parallelogram,if its one pairof opposite sides are equal and parallel