# Grade 7 Lines and Angles Worksheets

### 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

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