Q107 of 113 Page 128

In Fig. 5.60, two parallel lines l and m are cut by two transversals n and p. Find the values of x and y.

x + 66⁰ = 180⁰(Co Interior angle)

⇒ x = 114⁰

y + 48⁰ = 180⁰(Co Interior angle)

⇒ y = 132⁰

x = 114⁰ and y = 132⁰

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.

108

In Fig. 5.61, l, m and n are parallel lines, and the lines p and q are also parallel. Find the values of a, b and c.

109

In Fig. 5.62, state which pair of lines are parallel. Give reason.