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The Figure Given Below Shows a Pair of Parallel Lines Cut by a Transversal for the Following Case, Find a and B, Giving Reasons. - Mathematics

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Question

The figure given below shows a pair of parallel lines cut by a transversal for the following case, find a and b, giving reason.

Sum

Solution

a + 140° = 180° (Linear pair)

∴ a = 180° - 140° = 40°

But b = a  (alternate angles)

= 40°

∴ a = 40°, b = 40°

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Chapter 25: Properties of Angles and Lines (Including Parallel Lines) - Exercise 25 (B)

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Selina Mathematics [English] Class 6
Chapter 25 Properties of Angles and Lines (Including Parallel Lines)
Exercise 25 (B) | Q 2.1
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