Question

In the given figure, find the four angles $A.B.C$ and $D$ in the parallelogram $ABCD$

Answer 1

From figure,

$2a+3a+5a={180}^o$

=> $a={18}^o$

=> $\angle C=\angle A=5a={90}^o$

And,

=> $\angle D=\angle B=2a+3a=5a={90}^o$