Q108 of 113 Page 128

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.

∠ 6a = ∠3b = ∠4c = 1200 (Corresponding angle)


∠ 6a = 1200


⇒ ∠ a = 200


∠3b = 1200


⇒ ∠b = 400


∠4c = 1200


⇒ ∠c = 300


∠ a = 200, ∠b = 400, ∠c = 300


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