Question

In Fig. 10.57, three coplanar lines intersect at a point O, forming angles as shown in
the figure. Find the values of x, y, z and u.

Answer 1

Step-by-step explanation:

Brother as you can See that

Angle y = 50° [ Vertically Opposite Angles]

Angle z=90° [ Vertically Opposite Angles ]

As CD is a straight line therefore,

Angle y+ Angle X + 90 = 180

50 + angle X + 90 = 180

angle X + 140 = 180

Angle X =40

angle X =angle u [ vertically opposite angles]