In Fig., if l1 || l2, what is the value of y?A. 100B. 120C. 135D. 150 – InterviewSolution

1.

In Fig., if l1 || l2, what is the value of y?A. 100B. 120C. 135D. 150

Answer»

Given that,

l₁ ‖ l₂ and l₃ is transversal

∠1 = 3x (Vertically opposite angle)

y = ∠1 (Corresponding angle)

y = 3x (i)

y + x = 180°(Linear pair)

3x + x = 180°[From (i)]

4x = 180°

x = 45°

Therefore,

y = 3x = 3 x 45°

= 135°

Discussion

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