Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 634 · 40 sums

The method (90, 180, equal): Complement of a = 90 − a. Supplement of a = 180 − a. Lines crossing: vertically opposite angles are equal; a linear pair adds up to 180°. Parallel lines: corresponding angles equal, alternate interior angles equal, interior angles on the same side add up to 180°. One angle d° more than the other: bigger = (total + d) ÷ 2.

1. 1.Are 44° and 46° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
2. 2.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its other interior angle on the same side of the transversal (in degrees)?
3. 3.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
4. 4.What is the complement of 17° (in degrees)?
5. 5.What is the supplement of 104° (in degrees)?
6. 6.Are 16° and 164° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
7. 7.Two straight lines cross each other. One of the angles formed is 56°. What is the angle vertically opposite to it (in degrees)?
8. 8.What is the complement of 20° (in degrees)?
9. 9.Two straight lines cross each other. One of the angles formed is 111°. What is the angle vertically opposite to it (in degrees)?
10. 10.Are 59° and 31° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
11. 11.What is the supplement of 50° (in degrees)?
12. 12.What is the supplement of 59° (in degrees)?
13. 13.Are 35° and 49° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
14. 14.Two straight lines cross each other. One of the angles formed is 51°. What is the angle vertically opposite to it (in degrees)?
15. 15.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
16. 16.Two parallel lines are cut by a transversal. One interior angle is 78°. What is its other interior angle on the same side of the transversal (in degrees)?
17. 17.What is the complement of 71° (in degrees)?
18. 18.Are 55° and 125° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
19. 19.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
20. 20.What is the complement of 51° (in degrees)?
21. 21.Two angles are supplementary. One is 118° more than the other. What is the bigger angle (in degrees)?
22. 22.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
23. 23.Are 58° and 122° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
24. 24.Two angles are supplementary. One is 20° more than the other. What is the bigger angle (in degrees)?
25. 25.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
26. 26.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its alternate interior angle (in degrees)?
27. 27.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
28. 28.Are 79° and 85° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
29. 29.Are 79° and 11° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
30. 30.Two parallel lines are cut by a transversal. One angle is 56°. What is its corresponding angle (in degrees)?
31. 31.Two straight lines cross each other. One of the angles formed is 115°. What is the angle vertically opposite to it (in degrees)?
32. 32.What is the complement of 32° (in degrees)?
33. 33.What is the complement of 22° (in degrees)?
34. 34.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
35. 35.Two straight lines cross each other. One of the angles formed is 47°. What is the angle next to it on the same line (in degrees)?
36. 36.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
37. 37.Are 43° and 137° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
38. 38.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
39. 39.Two straight lines cross each other. One of the angles formed is 88°. What is the angle vertically opposite to it (in degrees)?
40. 40.What is the supplement of 121° (in degrees)?

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