GEOMETRY...Help?

1 ⤊

I am trying to write a proof to prove: opposite angles of a parallelogram are congruent. If you could help me, i would rly appreciate it! thanks :)

2006-11-15 13:03:13 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

2 answers

Draw a diagonal line through the paralellogram and use SSS (Side Side Side Congruence Postulate/Theorem) and then use the CPCTC theorem (coresponding parts of congruent triangles are congruent). Write a flow/paragraph/2-column proof for this.

2006-11-15 13:12:31 · answer #1 · answered by Anonymous · 0⤊ 0⤋

Draw a diagonal in the parallelogram then prove the two triangles congruent by SSS (opposite sides of a parallelogram are congruent). Opposite angles would be congruent by CPCTC

2006-11-15 13:09:35 · answer #2 · answered by MollyMAM 6 · 1⤊ 0⤋