START UP MATHEMATICS>Chapter 9 - Lines and Angles>REVIEW EXERCISES>Q 6

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The angle which forms an alternate interior pair with angle $' x'$ as shown in the given figure is:

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Important Questions on Lines and Angles

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START UP MATHEMATICS>Chapter 9 - Lines and Angles>REVIEW EXERCISES>Q 7

If a transversal is perpendicular to one of the two parallel lines, then the angle made by the transversal with the other line is:

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START UP MATHEMATICS>Chapter 9 - Lines and Angles>REVIEW EXERCISES>Q 8

In the given figure, if $p ∥ q$ then the value of $x$ is:

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START UP MATHEMATICS>Chapter 9 - Lines and Angles>REVIEW EXERCISES>Q 9

In the given figure, if $l ∥ m$ , then the value of $x$ is:

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START UP MATHEMATICS>Chapter 9 - Lines and Angles>REVIEW EXERCISES>Q 10

For line $l$ to be parallel to $m$ , which of the angles should be necessarily true?

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START UP MATHEMATICS>Chapter 9 - Lines and Angles>REVIEW EXERCISES>Q 1

The supplement of an acute angle is obtuse.

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START UP MATHEMATICS>Chapter 9 - Lines and Angles>REVIEW EXERCISES>Q 2

Angles of measure

50 °

and

150 °

are supplementary angles.

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START UP MATHEMATICS>Chapter 9 - Lines and Angles>REVIEW EXERCISES>Q 3

The complement of the complement of an angle is the angle itself.

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START UP MATHEMATICS>Chapter 9 - Lines and Angles>REVIEW EXERCISES>Q 4

If two parallel lines are cut by a transversal, the angles enclosed in Z shape are called alternate interior angles.