Question

please give answer in proper way , with reasons
it's geometry subject
it's urgent ​

Answer 1

In triangle QPR,

using midpoint theorem for sides PQ with A as midpoint and QR with B as midpoint,

AB|| PR and AB=1/2(PR)

Similarly for triangle PSR

CD||PR||AB and CD= 1/2(PR)=AB

Since, 2 sides of ABCD are parallel and equal, Hence ABCD is a parallelogram.