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In the Given Figure, the Directed Lines Are Parallel to Each Other. Find the Unknown Angles. - Mathematics

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Question

In the given figure, the directed lines are parallel to each other. Find the unknown angles.

Sum

Solution

∵ Lines are parallel

∴ x = z ......(corresponding angles)

But z + y = 180° .........(linear pair)

But y = 55° ........(vertically opposite angles)

∴ z + 55° = 180°

⇒ z = 180°− 55°

⇒ z = 125°

But x = z

∴ x = 125°

Hence x = 125°, y = 55°, z = 125°

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Properties of Parallel Lines
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Chapter 14: Lines and Angles (Including Construction of angles) - Exercise 14 (B)

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Selina Concise Mathematics [English] Class 7 ICSE
Chapter 14 Lines and Angles (Including Construction of angles)
Exercise 14 (B) | Q 6.02
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