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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 482 · 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 48° (in degrees)?
  2. 2.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  3. 3.What is the complement of 19° (in degrees)?
  4. 4.What is the supplement of 170° (in degrees)?
  5. 5.What is the supplement of 165° (in degrees)?
  6. 6.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the supplement of 57° (in degrees)?
  8. 8.What is the supplement of 91° (in degrees)?
  9. 9.What is the complement of 79° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 38°. What is its corresponding angle (in degrees)?
  11. 11.What is the complement of 39° (in degrees)?
  12. 12.What is the complement of 75° (in degrees)?
  13. 13.Two angles are supplementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 130°. What is its other interior angle on the same side of the transversal (in degrees)?
  15. 15.Are 23° and 67° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  16. 16.Two parallel lines are cut by a transversal. One angle is 60°. What is its corresponding angle (in degrees)?
  17. 17.What is the supplement of 30° (in degrees)?
  18. 18.What is the complement of 14° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 100°. What is the angle vertically opposite to it (in degrees)?
  20. 20.What is the complement of 84° (in degrees)?
  21. 21.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 50°. What is its corresponding angle (in degrees)?
  24. 24.What is the complement of 69° (in degrees)?
  25. 25.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 85°. What is its alternate interior angle (in degrees)?
  27. 27.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 151°. What is the angle next to it on the same line (in degrees)?
  29. 29.What is the supplement of 86° (in degrees)?
  30. 30.What is the complement of 18° (in degrees)?
  31. 31.Are 10° and 170° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two angles are supplementary. One is 112° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the supplement of 96° (in degrees)?
  35. 35.What is the complement of 77° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 90°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 59°. What is the angle vertically opposite to it (in degrees)?
  38. 38.What is the complement of 10° (in degrees)?
  39. 39.Are 42° and 138° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  40. 40.What is the supplement of 41° (in degrees)?

Answer key

  1. 42
  2. 68
  3. 71
  4. 10
  5. 15
  6. 49
  7. 123
  8. 89
  9. 11
  10. 38
  11. 51
  12. 15
  13. 109
  14. 50
  15. Complementary
  16. 60
  17. 150
  18. 76
  19. 100
  20. 6
  21. 134
  22. 114
  23. 50
  24. 21
  25. 73
  26. 85
  27. 120
  28. 29
  29. 94
  30. 72
  31. Supplementary
  32. 133
  33. 146
  34. 84
  35. 13
  36. 90
  37. 59
  38. 80
  39. Supplementary
  40. 139

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