Q4 of 50 Page 6

In Fig., AOB is a straight line. If ∠AOC + ∠BOD = 85°, then ∠COD =

Given:

AOB = Straight line

∠AOC + ∠BOD = 85^o

∠AOC + ∠COD + ∠BOD = 180^o (Linear pair)

85^o + ∠COD = 180^o

∠COD = 95^o

One angle is equal to three times its supplement. Find the angle.

Two straight lines AB and CD intersect each other at O. If ∠BOD = 63˚, find ∠BOC.

In Fig., find the values of x and y and then show that AB || CD.

An angle is equal to 5 times its complement. Find the angle.