Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 263 · 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.Two straight lines cross each other. One of the angles formed is 50°. What is the angle vertically opposite to it (in degrees)?
2. 2.Are 70° and 105° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
3. 3.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
4. 4.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
5. 5.What is the complement of 31° (in degrees)?
6. 6.What is the supplement of 26° (in degrees)?
7. 7.Two angles are supplementary. One is 136° more than the other. What is the bigger angle (in degrees)?
8. 8.What is the supplement of 25° (in degrees)?
9. 9.What is the supplement of 97° (in degrees)?
10. 10.What is the complement of 27° (in degrees)?
11. 11.What is the complement of 41° (in degrees)?
12. 12.What is the supplement of 163° (in degrees)?
13. 13.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its alternate interior angle (in degrees)?
14. 14.What is the complement of 63° (in degrees)?
15. 15.What is the supplement of 27° (in degrees)?
16. 16.Two straight lines cross each other. One of the angles formed is 137°. What is the angle next to it on the same line (in degrees)?
17. 17.Two straight lines cross each other. One of the angles formed is 132°. What is the angle vertically opposite to it (in degrees)?
18. 18.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
19. 19.What is the supplement of 83° (in degrees)?
20. 20.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
21. 21.What is the supplement of 158° (in degrees)?
22. 22.What is the supplement of 29° (in degrees)?
23. 23.Are 80° and 100° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
24. 24.Two straight lines cross each other. One of the angles formed is 127°. What is the angle next to it on the same line (in degrees)?
25. 25.Are 43° and 47° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
26. 26.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
27. 27.Two angles are supplementary. One is 94° more than the other. What is the bigger angle (in degrees)?
28. 28.Two parallel lines are cut by a transversal. One angle is 102°. What is its corresponding angle (in degrees)?
29. 29.What is the supplement of 145° (in degrees)?
30. 30.What is the supplement of 74° (in degrees)?
31. 31.What is the complement of 15° (in degrees)?
32. 32.Are 64° and 116° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
33. 33.Two parallel lines are cut by a transversal. One angle is 142°. What is its corresponding angle (in degrees)?
34. 34.What is the complement of 65° (in degrees)?
35. 35.What is the complement of 25° (in degrees)?
36. 36.Are 78° and 102° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
37. 37.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
38. 38.What is the complement of 20° (in degrees)?
39. 39.What is the supplement of 55° (in degrees)?
40. 40.Two straight lines cross each other. One of the angles formed is 132°. What is the angle next to it on the same line (in degrees)?

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