Question

Prove that the opposite sides of a parallelogram abcd are equal in length

Answer 1

Answer:

AC and BD are the diagonals of the parallelogram. Each diagonal of the parallelogram divides the parallelogram into two congruent triangles. ∴ Corresponding sides of congrunt triangles are equal. Hence the opposite sides of the parallelogram are equal.

Answer 2

Answer:

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