Question

1.Write a two-column proof for the following conjecture. You may not need to use all of the rows of the two-column table provided below. You may also add additional rows if needed. Given: Parallelogram ABCD Prove: Angle A and B are supplementary. C and d are supplementary.

Answer 1

Given

ABCD is a parallelogram.

To prove that: Angle, A and B are supplementary. Angle, B and C are supplementary.

Explanation:

It is given that,

ABCD is a parallelogram.

That implies,