Class 9 Practice – Level 3 – Set 2 – Lines and Angles

Total questions: 15

An angle is 20° less than its complement. Find its measure.

Topic: Complementary Angles

75°

55°

23°

35°

None

An angle is equal to five times its complement. Determine its measure.

Topic: Complementary Angles

65°

70°

75°

95°

None

Find ∠ACD in the given figure:

Topic: Angles in Triangles

120°

150°

160°

180°

None

Which so the following is true?

Topic: Parallel Lines and Angles

(i) A triangle can have two obtuse angles.
(ii) A triangle can have all angles equal to $6 0^{\circ}$
(iii) A triangle can have all angles more than $6 0^{\circ}$

Only (ii)

Only (i)

Only (iii)

All are true

None

In the shown figure AB ∥ CD . If ∠BAE=25° and ∠CDE=30°, then find ∠AED.

Topic: Intersecting of Lines

30°

45°

50°

55°

None

There are four lines in a plane no two of which are parallel. The maximum number of points in which they can intersect is :

Topic: Intersecting of Lines

None

If the arms of one angle are respectively parallel to the arms of another angle, then the two angles are:

Topic: Parallel Arms of Angles

Neither equal nor supplementary

Not equal but supplementary

Equal but not supplementary

Either equal or supplementary

None

In the given figure, straight lines PQ and RS intersect at O. If the magnitude of θ is 3 times that of ϕ, then ϕ is equal to :

Topic: Angle on a Straight Line

30°

40°

45°

60°

None

Two angles whose measures are a & b are such that 2a−3b=60° then 5b= ?, if they form a linear pair :

Topic: Linear Pair of Angles

120°

300°

60°

30°

None

10.

How many degrees are there in an angle which equals one-fifth of its supplement?

Topic: Supplementary Angles

15°

30°

75°

150°

None

11.

Find the supplement of the following angle: $\displaystyle \dfrac{3}{5}$ of a right angle

Topic: Supplementary Angles

150°

155°

125°

126°

None

12.

Find the angle whose supplement is four times its complement.

Topic: Supplementary and Complementary Angles

70°

80°

85°

60°

None

13.

Define the following term: Reflex angle

Topic: Types of Angles

An angle whose measure is more than 180° but less than 360°

An angle whose measure is more than 160° but less than 360°

An angle whose measure is more than 180° but less than 390°

An angle whose measure is more than 40° but less than 360°

None

14.

In fig. find the value of $\displaystyle x$ .

Topic: Linear Equations of Angles

All of these

None

15.

Find the value of 𝑥 for which the angles (2𝑥−5)° and (𝑥−10)° are the complementary angles.

Topic: Complementary Angles

45°

25°

75°

35°

None

1 out of 15

Class 9 Practice – Level 3 – Set 2 – Lines and Angles

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