Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 720 · 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.What is the complement of 19° (in degrees)?
2. 2.Two parallel lines are cut by a transversal. One angle is 41°. What is its corresponding angle (in degrees)?
3. 3.What is the complement of 14° (in degrees)?
4. 4.Are 22° and 92° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
5. 5.Are 61° and 20° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
6. 6.What is the complement of 70° (in degrees)?
7. 7.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
8. 8.Are 76° and 104° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
9. 9.Two parallel lines are cut by a transversal. One interior angle is 86°. What is its alternate interior angle (in degrees)?
10. 10.What is the supplement of 73° (in degrees)?
11. 11.What is the complement of 7° (in degrees)?
12. 12.Two angles are supplementary. One is 10° more than the other. What is the bigger angle (in degrees)?
13. 13.What is the complement of 33° (in degrees)?
14. 14.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
15. 15.What is the supplement of 38° (in degrees)?
16. 16.What is the complement of 25° (in degrees)?
17. 17.What is the complement of 16° (in degrees)?
18. 18.What is the supplement of 131° (in degrees)?
19. 19.What is the complement of 18° (in degrees)?
20. 20.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
21. 21.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its other interior angle on the same side of the transversal (in degrees)?
22. 22.Are 69° and 21° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
23. 23.What is the supplement of 30° (in degrees)?
24. 24.Two parallel lines are cut by a transversal. One angle is 37°. What is its corresponding angle (in degrees)?
25. 25.What is the complement of 11° (in degrees)?
26. 26.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
27. 27.What is the supplement of 14° (in degrees)?
28. 28.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
29. 29.Are 47° and 43° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
30. 30.What is the complement of 15° (in degrees)?
31. 31.What is the complement of 74° (in degrees)?
32. 32.Two straight lines cross each other. One of the angles formed is 38°. What is the angle next to it on the same line (in degrees)?
33. 33.Two straight lines cross each other. One of the angles formed is 38°. What is the angle vertically opposite to it (in degrees)?
34. 34.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
35. 35.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
36. 36.What is the complement of 54° (in degrees)?
37. 37.What is the supplement of 143° (in degrees)?
38. 38.Are 21° and 136° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
39. 39.Two straight lines cross each other. One of the angles formed is 64°. What is the angle next to it on the same line (in degrees)?
40. 40.What is the complement of 51° (in degrees)?

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