Question

in parallelogram ABCD 3angleA=2angleB then find D​

Answer 1

Step-by-step explanation:

Let the unknown angle be x.

We know, sum of all angles in a quadrilateral is 360.

Also, opposite angles of a parallelogram are equal.

Therefore A=C and B=D

Then we have, 3x+2x+3x+2x=360°

=>10x=360°

=>x=36°

Thus, B=D=2*36=72°