Q102 of 113 Page 128

In Fig. 5.55, l ||m and a line t intersects these lines at P and Q, respectively. Find the sum 2a + b.

∠a = 132⁰ (Corresponding angle)

∠b = 132⁰ (Vertically Opposite angle)

2a + b = 396⁰

100

In Fig. 5.53, find the value of ∠BOC, if points A, O and B are collinear.

101

In Fig. 5.54, if l ||m, find the values of a and b.

103

In Fig. 5.56, QP || RS. Find the values of a and b.

104

In Fig. 5.57, PQ || RT. Find the value of a + b.