### 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 â€¦â€¦â€¦â€¦â€¦.. .**

(a) equal

(b) unequal

(c) supplementary

(d) Complementary

2. **Two angles forming a linear pair are â€¦â€¦â€¦â€¦â€¦â€¦ .**

(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 â€¦â€¦â€¦â€¦â€¦â€¦ .**

(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 â€¦â€¦â€¦â€¦â€¦â€¦ .**

(a) 90Â°

(b) 180Â°

(c) 360Â°

(d) 45Â°

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

(a) 45Â°

(b) 180Â°

(c) 90Â°

(d) 360Â°

7. **If || m, then Ë† 1 = Ë† 2 because they are â€¦â€¦â€¦â€¦â€¦. ,**

(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 â€¦â€¦â€¦â€¦â€¦. in measure.**

(a) equal

(b) unequal

(c) supplementary

(d) complementary

9. **The difference in the measuresâ€™ of two complementary angles is 12Â°. Find the measures of the angles.**

(a) 51Â° and 49Â°

(b) 51Â° and 39Â°

(c) 60Â° and 30Â°

(d) 50Â° and 40Â°

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

(a) 139Â°

(b) 49Â°

(c) 35Â°

(d) 45Â°

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

(a) 65Â°, 115Â°

(b) 63Â°, 27Â°

(c) 112Â°, 68Â°

(d) 130Â°, 50Â°

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

(a) 80Â°, 10Â°

(b) 63Â°, 27Â°

(c) 112Â°, 68Â°

(d) 45Â°, 45Â°

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

(a) 30Â°

(b) 25Â°

(c) 35Â°

(d) 45Â°

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

(a) 60Â°

(b) 90Â°

(c) 180Â°

(d) none of these

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

(a) 60Â°

(b) 30Â°

(c) 45Â°

(d) 72Â°

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

(a) 70Â°, 20Â°

(b) 75Â°, 25Â°

(c) 48Â°, 52Â°

(d) 45Â°, 55Â°

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

(a) 110Â°, 50Â°

(b) 105Â°, 65Â°

(c) 50Â°, 130Â°

(d) 45Â°, 45Â°

18. **What is complement of 63Â°?**

(a) 18Â°

(b) 27Â°

(c) 30Â°

(d) 21Â°

19. **Find the supplement of 105Â°.**

(a) 80Â°

(b) 65Â°

(c) 75Â°

(d) 100Â°

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

(a) 120Â°

(b) 130Â°

(c) 90Â°

(d) 150Â°

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

1. Complementary angle of 65Â° is â€¦â€¦â€¦â€¦â€¦â€¦. .

2. Supplementary angle of 45Â° is â€¦â€¦â€¦â€¦â€¦â€¦.. .

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

4. An angle is formed by the intersection of â€¦â€¦â€¦â€¦â€¦ .

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 â€¦â€¦â€¦â€¦â€¦â€¦.. .

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

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

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 90Â°.

### 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 Ë† 4 = Ë† 8

(b) If Ë† 1 = Ë† 7, then l || m

(c) If Ë† 3 + Ë† 8 = 180Â°, 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 = 40Â°. 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.