# MCQ Questions for Class 7 Maths Chapter 5 Lines and Angles with Answers

Students are advised to solve the Lines and Angles Multiple Choice Questions of Class 7 Maths to know different concepts. Practicing the MCQ Questions on Lines and Angles Class 7 with answers will boost your confidence thereby helping you score well in the exam.

Explore numerous MCQ Questions of Lines and Angles Class 7 with answers provided with detailed solutions by looking below.

Question 1.

(180°, 5°) pair of angle is given :

(a) complementary

(b) supplementary

(c) None of these

## Answer

Answer: (c) None of these

As sum of two angles is neither 90° nor 180°.

Question 2.

What is the measure of the complement of 65°?

(a) 25°

(b) 55°

(c) 65°

(d) 45°

## Answer

Answer: (a) 25°

Question 3.

Complementary to 0° angle is :

(a) 90°

(b) 95°

(c) 75°

(d) None of these

## Answer

Answer: (a) 90°

Sum of complementary angles is 90°.

Question 4.

Identify which of the following pairs of angles are complementary.

(a) 65°, 115°

(b) 130°, 50°

(c) 63°, 27°

(d) 112°, 68°

## Answer

Answer: (c) 63°, 27°

Question 5.

Complementary to 70° angle is :

(a) 20°

(b) 30°

(c) 40°

(d) None of these

## Answer

Answer: (a) 20°

Sum of complementary angles is 90°.

Question 6.

What happens to the measurement of an angle after the extension of its arms?

(a) Doubles

(b) Triples

(c) Remains the same

(d) Cannot be said

## Answer

Answer: (c) Remains the same

Question 7.

Complementary to 95° angle is :

(a) 5°

(b) 0°

(c) 10°

(d) None of these

## Answer

Answer: (d) None of these

None of these, as sum of complementary angles is 90°.

Question 8.

What is the supplement of 105°

(a) 65°

(b) 75°

(c) 85°

(d) 95°

## Answer

Answer: (b) 75°

Question 9.

Find the value of x in the given figure if lines \( p \parallel q \) :

(a) x = 60°

(b) 50°

(c) 75°

(d) none of these

## Answer

Answer: (a) x = 60°

If two lines are parallel then corresponding angles are equal.

Question 10.

Identify which of the following pairs of angles are supplementary.

(a) 45°, 45°

(b) 63°, 27°

(c) 112°, 68°

(d) 80°, 10°

## Answer

Answer: (c) 112°, 68°

Question 11.

Measure of the supplement of 0° :

(a) 180°

(b) 90°

(c) 175°

(d) None of these

## Answer

Answer: (a) 180°

Sum of supplementary angles is 180°.

Question 12.

What do we call an angle whose measurement is exactly equal to 0°?

(a) An obtuse angle

(b) A straight angle

(c) A zero angle

(d) A right angle

## Answer

Answer: (c) A zero angle

Question 13.

If in the given figure \( l \parallel m \) then :

(a) x = 50°

(b) x = 60°

(c) No relation

## Answer

Answer: (a) x = 50°

These are alternating angles.

Question 14.

What are the lines which lie on the same plane and do not intersect at any point called?

(a) Perpendicular lines

(b) Intersecting lines

(c) Parallel lines

(d) Collinear lines

## Answer

Answer: (c) Parallel lines

Question 15.

In the given figure value of x is :

(a) 55°

(b) 45°

(c) 65°

(d) None of these

## Answer

Answer: (a) 55°

Vertically opposite angles are equal.

Question 16.

Find the angle, which is equal to its complement.

(a) 45°

(b) 25°

(c) 35°

(d) 30°

## Answer

Answer: (a) 45°

Question 17.

Indicate vertically opposite angles :

(a) (a, d)

(b) (a, b) and (c, d)

(c) (a, c) and

(d) None of these

## Answer

Answer: (b) (a, b) and (c, d)

Lines AB and CD are intersecting each other.

Question 18.

How many rays can be drawn from a given point?

(a) 2

(b) 5

(c) 8

(d) Infinitely many

## Answer

Answer: (d) Infinitely many

Question 19.

What do we call an angle which exactly measures 90°?

(a) An obtuse angle

(b) An acute angle

(c) A right angle

(d) A reflex angle

## Answer

Answer: (c) A right angle

Question 20.

If two angles are supplementary then the sum of their measures is __________.

(a) 45°

(b) 180°

(c) 90°

(d) 360°

## Answer

Answer: (b) 180°

Question 21.

Measure of the supplement of 100° :

(a) 70°

(b) 75°

(c) 80°

(d) None of these

## Answer

Answer: (c) 80°

Sum of supplementary angles is 180°.

Question 22.

The sum of all angles around a point is

(a) 0°

(b) 180°

(c) 360°

(d) 90°

## Answer

Answer: (c) 360°

Question 23.

Which instrument is used to measure or construct angles?

(a) Compasses

(b) Scale

(c) Protractor

(d) Set squares

## Answer

Answer: (c) Protractor

Question 24.

Measure of the supplement of 55° :

(a) 45°

(b) 125°

(c) 100°

(d) None of these

## Answer

Answer: (b) 125°

Sum of supplementary angles is 180°.

Question 25.

A line that intersects two or more lines at distinct points is called

(a) parallel

(b) transversal

(c) intersecting

(d) None of these

## Answer

Answer: (b) transversal

Question 26.

Complementary pair of angles :

(a) 70+ 20

(b) 30 + 45

(c) 0 + 95

(d) None of these

## Answer

Answer: (a) 70+ 20

Sum of two angles is 90°.

Question 27.

Find the angle, which is equal to its supplement.

(a) 60°

(b) 90°

(c) 120°

(d) 30°

## Answer

Answer: (b) 90°

Question 28.

Identify supplementary pair of angles :

(a) 0° – 90°

(b) 30°, 150°

(c) 45° – 145°

(d) None of these

## Answer

Answer: (b) 30°, 150°

If sum of two angles is 180°, i.e., pair of supplementary.

Question 29.

If two lines intersect at a point, then the vertically opposite angles are always ________ .

(a) supplementary

(b) equal

(c) unequal

(d) none of these

## Answer

Answer: (b) equal

Question 30.

If in the given figure \(\angle \) x = \(\angle \) y then :

(a) \( l \parallel m \)

(b) l ≠ m

(c) none of these

## Answer

Answer: (a) \( l \parallel m \)

Two lines are parallel if alternating angles are equal.

Question 31.

If two adjacent angles are supplementary, then they form _________ .

(a) a linear pair of angles

(b) vertically opposite angles

(c) Corresponding angles

(d) a ray

## Answer

Answer: (a) a linear pair of angles

Question 32.

In the given value of x is :

(a) 35°

(c) 15°

(b) 90°

(d) None of these

## Answer

Answer: (c) 15°

Sum of linear pair is 180°.

Question 33.

What is the measure of the complement of 41°?

(a) 135°

(b) 15°

(c) 49°

(d) None of these

## Answer

Answer: (c) 49°

Question 34.

Find sum of angle x and y if in the given figure \( l \parallel m \):

(a) 90°

(b) 180°

(c) 175°

(d) none of these

## Answer

Answer: (b) 180°

If two lines are parallel then sum of interior opposite angles is 180°.

Match the following:

Question 1.

(a) 30° 60° | 1. Linear pair |

(b) 90° 90° | 2. Complementary angles |

(c) 30° 150° | 3. Supplementary angles |

(d) 45° | 4. Acute angle |

## Answer

Answer:

(a )30° 60° | 2. Complementary angles |

(b) 90° 90° | 1. Linear pair |

(c) 30° 150° | 3. Supplementary angles |

(d) 45° | 4. Acute angle |

Question 2.

(a) 100° | 1. 125° |

(b) 90° | 2. 65° |

(c) 55° | 3. 90° |

(d) 115° | 4. 80° |

## Answer

Answer:

(a) 100° | 4. 80° |

(b) 90° | 3. 90° |

(c)55° | 1. 125° |

(d) 115° | 2. 65° |

State whether the given statements are true or false:

Question 1.

Can two acute angles form a linear pair ?

## Answer

Answer: false

Question 2.

Can two obtuse angles form a linear pair ?

## Answer

Answer: false

Question 3.

Can two right angles forms a linear pair ?

## Answer

Answer: true

Question 4.

Are two alternate angles equal if a transversal intersects two parallel lines ?

## Answer

Answer: true

Question 5.

One acute and one obtuse angle can form a linear pair.

## Answer

Answer: true

Question 6.

Two obtuse angles are complementary.

## Answer

Answer: false

Question 7.

One acute and one obtuse angle can be supplementary.

## Answer

Answer: true

Question 8.

Sum of linear pair is 180°.

## Answer

Answer: true

Fill in the blanks:

1. The sum of the measures of two angles is 180°, the angles are called ………… angles.

## Answer

Answer: supplementry

2. Two lines intersect and the vertically opposite angles so formed are ……………….

## Answer

Answer: equal

3. Adjacent angles have a common …………… and a common …………………

## Answer

Answer: vertex, arm

4. If two adjacent angles are supplementary, they form a ………………

## Answer

Answer: linear pair

5. The sum of the measures of two angles is 90°, the angles are called ………….. angles.

## Answer

Answer: complementry

6. Line segment has ………… end points.

## Answer

Answer: two

7. Two angles forming a linear pair are …………….

## Answer

Answer: supplementry

With the help of given figure, Answer the following questions:

Question 1.

Interior angles

## Answer

Answer: \(\angle 3\), \(\angle 4\), \(\angle 5\), \(\angle 6\)

Question 2.

Exterior angles

## Answer

Answer: \(\angle 1\), \(\angle 2\), \(\angle 7\), \(\angle 8\)

Question 3.

Pairs of corresponding angles

## Answer

Answer: \(\angle 1\) and \(\angle 5\), \(\angle 2\) and \(\angle 6\), \(\angle 3\) and \(\angle 7\), \(\angle 4\) and \(\angle 8\)

Question 4.

Pairs of alternate interior angles

## Answer

Answer: \(\angle 3\) and \(\angle 6\), \(\angle 4\) and \(\angle 5\)

Question 5.

Pairs of alternate exterior angles

## Answer

Answer: \(\angle 1\) and \(\angle 8\), \(\angle 2\) and \(\angle 7\)

Question 6.

Pair of interior angles on the same side of the transversal

## Answer

Answer: \(\angle 3\) and \(\angle 5\), \(\angle 4\) and \(\angle 6\)

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