Question

find the value of x and y in the following figure.​

Answer 1

Answer:

ABCD is a parallelogram

so,angle B=angle D

120-x=x-80

=> 120+80=x+x

=> 200=2x

=> x=200/2

=> x=100

so value of x=100°

so, angle B=(100-80)°=20°

again, angle A+angle B=180°[one side internal angles]

so, y+20=180

=> y=(180-20)=160

value of y=160°