Question

Which of the following are necessary when proving that the opposite sides of

a parallelogram are congruent? Check all that apply.
A. Opposite sides are parallel.
B. Corresponding parts of congruent triangles are congruent.
C. Opposite sides are perpendicular.
D. Corresponding parts of similar triangles are similar.
SUBMIT

Answer 1

It's A and B: Opposite sides are parallel and Corresponding parts of congruent triangles are congruent.

Explanation:

Answer 2

A. Opposite sides are parallel.