Question

□ABCD is a parallelogram. If angle A=x° and angle B=(3x+20) find the measures of angle C and angle D​

Answer 1

Step-by-step explanation:

we know that sum of interior angle on the same side measure 180°.

so, A+B=180

4X+20= 180

4X= 160

X= 40°

A= 40° and B= 140°

in llgm opposite angles are equal..

angle A= angle c

angle b= angle d.