Q6 of 115 Page 8

Given ∠POR = 3x and ∠QOR =2x+10°. If ∠POQ is a straight line, then the value of x is

Given,

POQ is a straight line

∠POQ + ∠QOR = 180^o (Linear pair)

3x + 2x + 10^o = 180^o

5x = 170^o

x = 34^o

Two straight lines AB and CD cut each other at O. If ∠BOD = 63°, the ∠BOC =

Consider the following statements:

When two straight lines intersect:

(i) 0Adjacent angles are complementary

(ii) Adjacent angles are supplementary.

(iii) Opposite angles are equal.

(iv) Opposite angles are supplementary.

Of these statements

In Fig. 8.122, AOB is a straight line. If ∠AOC +∠BOD = 85°, then ∠COD =

In Fig. 8.123, the value of y is