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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 230 · 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 55° (in degrees)?
  2. 2.Are 18° and 47° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  3. 3.What is the complement of 30° (in degrees)?
  4. 4.Are 48° and 132° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  5. 5.Two parallel lines are cut by a transversal. One angle is 117°. What is its corresponding angle (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 36°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.What is the complement of 67° (in degrees)?
  8. 8.Are 60° and 30° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  9. 9.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 132°. What is its other interior angle on the same side of the transversal (in degrees)?
  11. 11.Are 38° and 52° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.What is the complement of 21° (in degrees)?
  13. 13.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 100°. What is the angle next to it on the same line (in degrees)?
  17. 17.What is the complement of 15° (in degrees)?
  18. 18.Are 41° and 64° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  19. 19.Two straight lines cross each other. One of the angles formed is 105°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 127°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 140°. What is its corresponding angle (in degrees)?
  22. 22.Are 50° and 89° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  23. 23.Two straight lines cross each other. One of the angles formed is 48°. What is the angle next to it on the same line (in degrees)?
  24. 24.Are 59° and 31° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  25. 25.What is the supplement of 50° (in degrees)?
  26. 26.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)?
  27. 27.What is the complement of 24° (in degrees)?
  28. 28.What is the complement of 22° (in degrees)?
  29. 29.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 130°. What is the angle next to it on the same line (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 148°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Are 73° and 17° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  33. 33.What is the complement of 19° (in degrees)?
  34. 34.What is the complement of 39° (in degrees)?
  35. 35.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
  37. 37.What is the supplement of 28° (in degrees)?
  38. 38.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the supplement of 101° (in degrees)?
  40. 40.What is the complement of 28° (in degrees)?

Answer key

  1. 35
  2. Neither
  3. 60
  4. Supplementary
  5. 117
  6. 144
  7. 23
  8. Complementary
  9. 74
  10. 48
  11. Complementary
  12. 69
  13. 72
  14. 75
  15. 66
  16. 80
  17. 75
  18. Neither
  19. 105
  20. 127
  21. 140
  22. Neither
  23. 132
  24. Complementary
  25. 130
  26. 138
  27. 66
  28. 68
  29. 54
  30. 50
  31. 148
  32. Complementary
  33. 71
  34. 51
  35. 52
  36. 130
  37. 152
  38. 71
  39. 79
  40. 62

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