Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 668 · 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 angles are supplementary. One is 74° more than the other. What is the bigger angle (in degrees)?
2. 2.What is the supplement of 12° (in degrees)?
3. 3.Two straight lines cross each other. One of the angles formed is 36°. What is the angle next to it on the same line (in degrees)?
4. 4.What is the complement of 14° (in degrees)?
5. 5.What is the supplement of 84° (in degrees)?
6. 6.Two angles are supplementary. One is 66° more than the other. What is the bigger angle (in degrees)?
7. 7.What is the supplement of 90° (in degrees)?
8. 8.Are 62° and 28° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
9. 9.What is the supplement of 98° (in degrees)?
10. 10.What is the supplement of 148° (in degrees)?
11. 11.Are 15° and 165° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
12. 12.What is the supplement of 78° (in degrees)?
13. 13.Two straight lines cross each other. One of the angles formed is 60°. What is the angle next to it on the same line (in degrees)?
14. 14.Two straight lines cross each other. One of the angles formed is 133°. What is the angle vertically opposite to it (in degrees)?
15. 15.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
16. 16.What is the supplement of 56° (in degrees)?
17. 17.Two straight lines cross each other. One of the angles formed is 26°. What is the angle next to it on the same line (in degrees)?
18. 18.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
19. 19.Two straight lines cross each other. One of the angles formed is 71°. What is the angle vertically opposite to it (in degrees)?
20. 20.Two parallel lines are cut by a transversal. One angle is 36°. What is its corresponding angle (in degrees)?
21. 21.Two straight lines cross each other. One of the angles formed is 69°. What is the angle next to it on the same line (in degrees)?
22. 22.What is the complement of 53° (in degrees)?
23. 23.What is the supplement of 31° (in degrees)?
24. 24.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
25. 25.What is the complement of 8° (in degrees)?
26. 26.What is the complement of 71° (in degrees)?
27. 27.What is the complement of 38° (in degrees)?
28. 28.What is the supplement of 61° (in degrees)?
29. 29.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
30. 30.Are 21° and 69° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
31. 31.What is the supplement of 37° (in degrees)?
32. 32.What is the complement of 16° (in degrees)?
33. 33.What is the complement of 58° (in degrees)?
34. 34.Two parallel lines are cut by a transversal. One interior angle is 36°. What is its other interior angle on the same side of the transversal (in degrees)?
35. 35.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)?
36. 36.What is the supplement of 49° (in degrees)?
37. 37.Two parallel lines are cut by a transversal. One interior angle is 64°. What is its other interior angle on the same side of the transversal (in degrees)?
38. 38.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
39. 39.What is the complement of 41° (in degrees)?
40. 40.What is the supplement of 109° (in degrees)?

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