### Grade 7 Maths Lines and Angles Multiple Choice Questions (MCQs)

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

(a) equal

(b) unequal

(c) supplementary

(d) Complementary

2. **Two angles forming a linear pair are ……………… .**

(a) equal

(b) supplementary

(c) unequal

(d) Complementary

3. **A line that intersects two or more lines at distinct points is called:**

(a) Parallel

(b) transversal

(c) intersecting

(d) none of these

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

(a) corresponding angles

(b) vertically opposite angles

(c) a linear pair of angles

(d) a ray

5. **If two angles are supplementary, then the sum of their measures is ……………… .**

(a) 90°

(b) 180°

(c) 360°

(d) 45°

6. **If two angles are complementary, then the sum of their measures is ……………. .**

(a) 45°

(b) 180°

(c) 90°

(d) 360°

7. **If || m, then ∠1 = ∠2 because they are ……………. ,**

(a) corresponding angles

(b) vertically opposite angles

(c) alternate interior angles

(d) supplementary angles

8. **If two parallel lines are cut by a transversal, each pair of the corresponding angles are ……………. in measure.**

(a) equal

(b) unequal

(c) supplementary

(d) complementary

9. **The difference in the measures’ of two complementary angles is 12°. Find the measures of the angles.**

(a) 51° and 49°

(b) 51° and 39°

(c) 60° and 30°

(d) 50° and 40°

10. **What is the measure of the complement of 41°?**

(a) 139°

(b) 49°

(c) 35°

(d) 45°

11. **Identify which of the following pairs of angles are complementary?**

(a) 65°, 115°

(b) 63°, 27°

(c) 112°, 68°

(d) 130°, 50°

12. **Identify which of the following pairs of angles are supplementary?**

(a) 80°, 10°

(b) 63°, 27°

(c) 112°, 68°

(d) 45°, 45°

13. **Find the angle, which is equal to its complement?**

(a) 30°

(b) 25°

(c) 35°

(d) 45°

14. **Find the angle, which is equal to its supplement?**

(a) 60°

(b) 90°

(c) 180°

(d) none of these

15. **The angle which is four times its complement is:**

(a) 60°

(b) 30°

(c) 45°

(d) 72°

16. **Which pair of following angles are complementary?**

(a) 70°, 20°

(b) 75°, 25°

(c) 48°, 52°

(d) 45°, 55°

17. **Which pair of following angles are supplementary?**

(a) 110°, 50°

(b) 105°, 65°

(c) 50°, 130°

(d) 45°, 45°

18. **What is complement of 63°?**

(a) 18°

(b) 27°

(c) 30°

(d) 21°

19. **Find the supplement of 105°.**

(a) 80°

(b) 65°

(c) 75°

(d) 100°

20. **Two lines PQ and RS intersect at O. If ∠POR = 50°, then value of ∠ROQ is:**

(a) 120°

(b) 130°

(c) 90°

(d) 150°

### Grade 7 Maths Lines and Angles Fill In The Blanks

1. Complementary angle of 65° is ………………. .

2. Supplementary angle of 45° is ……………….. .

3. If line AB||CD and LM is transversal, sum of two interior angles on the same side of transversal is equal to ………………… .

4. An angle is formed by the intersection of …………… .

5. If two lines intersect at a point and if one pair of vertically opposite angles arc acute angles, then the other pair of vertically opposite angles are ……………….. .

### Grade 7 Maths Lines and Angles True(T) And False(F)

1. If measure of an angle is 90° then its supplement angle will be greater than 90°.

2. Two obtuse angles form a linear pair.

3. Two acute angles form a linear pair.

4. If two adjacent angles are complementary they form a right angle.

5. Sum of interior angles on the same side of a transversal with two parallel lines is 90°.

### Grade 7 Maths Lines and Angles Very Short Answer Type Questions

1. In the given figures, decide whether a is parallel to b or not.

2. State the property that is used in each of the following statements:

(a) If l || m, then ∠4 = ∠8

(b) If ∠1 = ∠7, then l || m

(c) If ∠3 + ∠8 = 180°, then l || m

### Grade 7 Maths Lines and Angles Short Answer Type Questions

Find the value of y in each of the following figure if a || b.

### Grade 7 Maths Lines and Angles Long Answer Type Questions

1. Out of a pair of complementary angles, one is two third of the other. Find the angles.

2. In the following figure name the In fig, if a = 40°. Then what is the value of b.

3. In the following figure name the following pairs of angles:

(a) Obtuse vertically opposite angles.

(b) Adjacent complement angles.

(c) Equal supplementary angles.

(d) Unequal supplementary angles.

(e) Adjacement angles that do not form a linear pair.