Question

find x in the following figures A=X° B=3x+10° C=2x D=0°​

Answer 1

In given figure ABCD is a parallelogram.

We have given that, ∠A=(x+20)∘ and ∠C=(3x−10)∘

We know that opposite angles of parallelogram are equal.

So, ∠A=∠C

(x+20)∘=(3x−10)∘

 2x∘=30∘

∴   x=15∘