#1: Each diagonal of a parallelogram divides the parallelogram into two congruent triangles. Parallelogram Theorem
#2: The opposite sides of a parallelogram are congruent. ... Your second goal is to prove that the opposite sides must be parallel and so therefore the quadrilateral is a parallelogram.
Answers & Comments
Answer:
TRUE
Parallelogram Theorem
#1: Each diagonal of a parallelogram divides the parallelogram into two congruent triangles. Parallelogram Theorem
#2: The opposite sides of a parallelogram are congruent. ... Your second goal is to prove that the opposite sides must be parallel and so therefore the quadrilateral is a parallelogram.