Question

In Fig. 4.188 , show that x = y.
A
Х
у
120°
30°
D
B
С​

Answer 1

Answer:

Sum of angles in a triangle = 180

120+30+x= 180

180-150= x

x= 30

Straight line angle= 180

180-120= 60

90+60+y= 180

150+y= 180

180-150=y

30= y

x=y

Hence proved

Hope this helps you