Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 870 · 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 23° (in degrees)?
2. 2.Two straight lines cross each other. One of the angles formed is 134°. What is the angle next to it on the same line (in degrees)?
3. 3.What is the complement of 54° (in degrees)?
4. 4.Two straight lines cross each other. One of the angles formed is 70°. What is the angle next to it on the same line (in degrees)?
5. 5.Two straight lines cross each other. One of the angles formed is 71°. What is the angle next to it on the same line (in degrees)?
6. 6.What is the supplement of 23° (in degrees)?
7. 7.Are 50° and 124° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
8. 8.Two parallel lines are cut by a transversal. One interior angle is 98°. What is its alternate interior angle (in degrees)?
9. 9.Are 23° and 61° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
10. 10.Two straight lines cross each other. One of the angles formed is 34°. What is the angle next to it on the same line (in degrees)?
11. 11.Are 12° and 168° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
12. 12.Two straight lines cross each other. One of the angles formed is 87°. What is the angle vertically opposite to it (in degrees)?
13. 13.What is the supplement of 115° (in degrees)?
14. 14.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
15. 15.What is the complement of 68° (in degrees)?
16. 16.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
17. 17.Are 70° and 20° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
18. 18.Two parallel lines are cut by a transversal. One angle is 101°. What is its corresponding angle (in degrees)?
19. 19.What is the supplement of 37° (in degrees)?
20. 20.What is the supplement of 135° (in degrees)?
21. 21.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
22. 22.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
23. 23.What is the supplement of 50° (in degrees)?
24. 24.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)?
25. 25.What is the supplement of 65° (in degrees)?
26. 26.What is the supplement of 11° (in degrees)?
27. 27.What is the complement of 49° (in degrees)?
28. 28.What is the supplement of 131° (in degrees)?
29. 29.Two parallel lines are cut by a transversal. One interior angle is 107°. What is its other interior angle on the same side of the transversal (in degrees)?
30. 30.Two straight lines cross each other. One of the angles formed is 122°. What is the angle vertically opposite to it (in degrees)?
31. 31.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
32. 32.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
33. 33.What is the supplement of 52° (in degrees)?
34. 34.Are 42° and 55° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
35. 35.Two straight lines cross each other. One of the angles formed is 50°. What is the angle vertically opposite to it (in degrees)?
36. 36.Two straight lines cross each other. One of the angles formed is 36°. What is the angle vertically opposite to it (in degrees)?
37. 37.Two straight lines cross each other. One of the angles formed is 107°. What is the angle vertically opposite to it (in degrees)?
38. 38.Are 18° and 72° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
39. 39.Are 77° and 65° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
40. 40.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?

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