Q104 of 113 Page 128

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

Since PQ || RT

∠b = 55⁰ (Alternate Interior angle)

∠a = 45⁰ (Corresponding angle)

∠a + ∠b = 100⁰

102

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

103

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

105

In Fig 5.58, PQ, RS and UT are parallel lines.

(i) If c = 57⁰ and a = find the value of d.

(ii) If c = 75⁰ and a = c, find b.

106

In Fig. 5.59, AB||CD. Find the reflex ∠EFG.