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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 586 · 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 supplement of 44° (in degrees)?
  2. 2.What is the complement of 39° (in degrees)?
  3. 3.What is the complement of 10° (in degrees)?
  4. 4.What is the complement of 50° (in degrees)?
  5. 5.Two angles are supplementary. One is 110° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  8. 8.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)?
  9. 9.What is the supplement of 51° (in degrees)?
  10. 10.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 26° and 154° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.What is the supplement of 105° (in degrees)?
  13. 13.What is the complement of 73° (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 42°. What is the angle next to it on the same line (in degrees)?
  15. 15.What is the complement of 64° (in degrees)?
  16. 16.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the supplement of 48° (in degrees)?
  19. 19.What is the supplement of 95° (in degrees)?
  20. 20.Are 78° and 12° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  21. 21.Two straight lines cross each other. One of the angles formed is 143°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 137°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the supplement of 78° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 100°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the supplement of 60° (in degrees)?
  27. 27.What is the complement of 9° (in degrees)?
  28. 28.What is the complement of 21° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 160°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  31. 31.What is the supplement of 70° (in degrees)?
  32. 32.What is the supplement of 76° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 54°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 84°. What is its alternate interior angle (in degrees)?
  35. 35.Are 73° and 107° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.Two straight lines cross each other. One of the angles formed is 147°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 44°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 36°. What is its alternate interior angle (in degrees)?
  39. 39.What is the complement of 14° (in degrees)?
  40. 40.What is the supplement of 28° (in degrees)?

Answer key

  1. 136
  2. 51
  3. 80
  4. 40
  5. 145
  6. 46
  7. 51
  8. 113
  9. 129
  10. 138
  11. Supplementary
  12. 75
  13. 17
  14. 138
  15. 26
  16. 53
  17. 52
  18. 132
  19. 85
  20. Complementary
  21. 143
  22. 137
  23. 98
  24. 102
  25. 100
  26. 120
  27. 81
  28. 69
  29. 160
  30. 121
  31. 110
  32. 104
  33. 54
  34. 84
  35. Supplementary
  36. 33
  37. 136
  38. 36
  39. 76
  40. 152

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