NCERT Exemplar Mathematics - Class 9>Chapter 6 - Lines and Angles>Exercise>Q 3

EASY

9th CBSE

IMPORTANT

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A transversal intersects two parallel lines. Prove that the bisectors of any pair of corresponding angles so formed are parallel.

Important Questions on Lines and Angles

EASY

9th CBSE

IMPORTANT

NCERT Exemplar Mathematics - Class 9>Chapter 6 - Lines and Angles>Exercise>Q 2

If one angle of a triangle is equal to the sum of the other two angles, then the triangle is

EASY

9th CBSE

IMPORTANT

NCERT Exemplar Mathematics - Class 9>Chapter 6 - Lines and Angles>Exercise>Q 3

An exterior angle of a triangle is

105 °

and its two interior opposite angles are equal. Each of these equal angle is

EASY

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IMPORTANT

NCERT Exemplar Mathematics - Class 9>Chapter 6 - Lines and Angles>Exercise>Q 4

The angles of a triangle are in the ratio

5 : 3 : 7

. The triangle is

EASY

9th CBSE

IMPORTANT

NCERT Exemplar Mathematics - Class 9>Chapter 6 - Lines and Angles>Exercise>Q 6

In the given figure,

P O Q

is a line, then the value of

x

is

Question Image

EASY

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IMPORTANT

NCERT Exemplar Mathematics - Class 9>Chapter 6 - Lines and Angles>Exercise>Q 7

In the given figure, if $O P ∥ R S, ∠ O P Q = 110 °$ and $∠ Q R S = 130 °$ , then $∠ P Q R$ is equal to

Question Image

EASY

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IMPORTANT

NCERT Exemplar Mathematics - Class 9>Chapter 6 - Lines and Angles>Exercise>Q 8

Angles of a triangle are in the ratio

2 : 4 : 3

. The smallest angle of the triangle is

EASY

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IMPORTANT

NCERT Exemplar Mathematics - Class 9>Chapter 6 - Lines and Angles>Exercise>Q 4

Prove that through a given point, we can draw only one perpendicular to a given line.

HARD

9th CBSE

IMPORTANT

NCERT Exemplar Mathematics - Class 9>Chapter 6 - Lines and Angles>Exercise>Q 5

Prove that two lines that are respectively perpendicular to two intersecting lines intersect each other.
[Hint: Use proof by contradiction]