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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 867 · 40 sums
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.What is the complement of 44° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 52°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 138°. What is its corresponding angle (in degrees)?
  4. 4.What is the supplement of 160° (in degrees)?
  5. 5.Are 22° and 95° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  6. 6.What is the supplement of 127° (in degrees)?
  7. 7.What is the complement of 20° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 73°. What is the angle next to it on the same line (in degrees)?
  9. 9.What is the supplement of 131° (in degrees)?
  10. 10.What is the supplement of 48° (in degrees)?
  11. 11.Are 69° and 111° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  12. 12.What is the complement of 23° (in degrees)?
  13. 13.What is the supplement of 79° (in degrees)?
  14. 14.What is the complement of 7° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 67°. What is its other interior angle on the same side of the transversal (in degrees)?
  16. 16.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
  17. 17.Are 23° and 79° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 92°. What is its other interior angle on the same side of the transversal (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
  20. 20.Are 75° and 105° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  21. 21.Are 23° and 67° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.Are 27° and 78° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  23. 23.What is the complement of 65° (in degrees)?
  24. 24.What is the supplement of 118° (in degrees)?
  25. 25.What is the complement of 22° (in degrees)?
  26. 26.Are 56° and 34° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  27. 27.Are 58° and 32° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  28. 28.Are 45° and 45° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  29. 29.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the supplement of 41° (in degrees)?
  31. 31.Are 23° and 154° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 95°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 95°. What is the angle next to it on the same line (in degrees)?
  34. 34.Are 14° and 20° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the complement of 84° (in degrees)?
  38. 38.What is the supplement of 89° (in degrees)?
  39. 39.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two angles are supplementary. One is 108° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 46
  2. 52
  3. 138
  4. 20
  5. Neither
  6. 53
  7. 70
  8. 107
  9. 49
  10. 132
  11. Supplementary
  12. 67
  13. 101
  14. 83
  15. 113
  16. 153
  17. Neither
  18. 88
  19. 95
  20. Supplementary
  21. Complementary
  22. Neither
  23. 25
  24. 62
  25. 68
  26. Complementary
  27. Complementary
  28. Complementary
  29. 72
  30. 139
  31. Neither
  32. 85
  33. 85
  34. Neither
  35. 79
  36. 69
  37. 6
  38. 91
  39. 50
  40. 144

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