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Interior Angle Theorem and Its Converse

In the given ...

Question

In the given figure if m and n are parallel and x is the transversal, then which of the following angles measure 70°?

A

a

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B

b

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C

c

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D

d

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Solution

The correct option is A a
Given, n || m and x is the transversal.

Since the lines are parallel, the alternate exterior angles are equal.

∴ a = 70°

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