Question

Pls answer this question

Answer 1

Answer:

if the first tow side AB and CD are parellel to each othe then ,side DC and side BC are aslo parrel to each other.....

AB||CD...........1

DC||BC...........2

from 1 and 2

AB =BC=CD=DC.....sides opposite of a parallelogram are equal and congruent..

•ABCD is a parallogram..... proved