Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 236 · 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 85° (in degrees)?
2. 2.Are 17° and 50° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
3. 3.What is the complement of 68° (in degrees)?
4. 4.Two angles are supplementary. One is 8° more than the other. What is the bigger angle (in degrees)?
5. 5.Are 11° and 169° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
6. 6.Two parallel lines are cut by a transversal. One interior angle is 107°. What is its alternate interior angle (in degrees)?
7. 7.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its other interior angle on the same side of the transversal (in degrees)?
8. 8.Two angles are supplementary. One is 22° more than the other. What is the bigger angle (in degrees)?
9. 9.Two straight lines cross each other. One of the angles formed is 158°. What is the angle vertically opposite to it (in degrees)?
10. 10.What is the complement of 19° (in degrees)?
11. 11.Two angles are supplementary. One is 118° more than the other. What is the bigger angle (in degrees)?
12. 12.Two angles are supplementary. One is 94° more than the other. What is the bigger angle (in degrees)?
13. 13.What is the supplement of 36° (in degrees)?
14. 14.What is the complement of 18° (in degrees)?
15. 15.What is the complement of 23° (in degrees)?
16. 16.What is the supplement of 24° (in degrees)?
17. 17.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
18. 18.What is the complement of 21° (in degrees)?
19. 19.What is the complement of 62° (in degrees)?
20. 20.Two angles are supplementary. One is 104° more than the other. What is the bigger angle (in degrees)?
21. 21.What is the supplement of 161° (in degrees)?
22. 22.What is the complement of 12° (in degrees)?
23. 23.Two straight lines cross each other. One of the angles formed is 44°. What is the angle vertically opposite to it (in degrees)?
24. 24.What is the complement of 47° (in degrees)?
25. 25.What is the complement of 57° (in degrees)?
26. 26.Are 49° and 41° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
27. 27.Two parallel lines are cut by a transversal. One interior angle is 68°. What is its other interior angle on the same side of the transversal (in degrees)?
28. 28.What is the complement of 55° (in degrees)?
29. 29.What is the supplement of 166° (in degrees)?
30. 30.What is the supplement of 41° (in degrees)?
31. 31.Two angles are supplementary. One is 76° more than the other. What is the bigger angle (in degrees)?
32. 32.What is the supplement of 142° (in degrees)?
33. 33.What is the complement of 41° (in degrees)?
34. 34.Are 61° and 29° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
35. 35.What is the complement of 37° (in degrees)?
36. 36.Are 49° and 9° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
37. 37.What is the supplement of 141° (in degrees)?
38. 38.Two angles are supplementary. One is 32° more than the other. What is the bigger angle (in degrees)?
39. 39.What is the complement of 56° (in degrees)?
40. 40.Two straight lines cross each other. One of the angles formed is 149°. What is the angle next to it on the same line (in degrees)?

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