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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 768 · 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.Are 43° and 47° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  2. 2.Two parallel lines are cut by a transversal. One angle is 48°. What is its corresponding angle (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 144°. What is its corresponding angle (in degrees)?
  4. 4.Are 72° and 82° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.Two parallel lines are cut by a transversal. One angle is 138°. What is its corresponding angle (in degrees)?
  6. 6.What is the supplement of 170° (in degrees)?
  7. 7.What is the supplement of 67° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One angle is 37°. What is its corresponding angle (in degrees)?
  9. 9.Two angles are supplementary. One is 118° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 149°. What is its corresponding angle (in degrees)?
  11. 11.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 99°. What is its corresponding angle (in degrees)?
  13. 13.What is the supplement of 158° (in degrees)?
  14. 14.Are 64° and 107° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  15. 15.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
  16. 16.What is the complement of 30° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 115°. What is its alternate interior angle (in degrees)?
  18. 18.What is the complement of 25° (in degrees)?
  19. 19.What is the complement of 63° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 146°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Are 32° and 58° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.What is the complement of 55° (in degrees)?
  23. 23.What is the supplement of 40° (in degrees)?
  24. 24.Are 23° and 157° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  25. 25.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the complement of 65° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
  28. 28.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 156°. What is the angle next to it on the same line (in degrees)?
  30. 30.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  31. 31.Are 79° and 101° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.What is the supplement of 137° (in degrees)?
  33. 33.What is the complement of 15° (in degrees)?
  34. 34.What is the complement of 45° (in degrees)?
  35. 35.What is the supplement of 108° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its alternate interior angle (in degrees)?
  37. 37.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 132°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the complement of 27° (in degrees)?

Answer key

  1. Complementary
  2. 48
  3. 144
  4. Neither
  5. 138
  6. 10
  7. 113
  8. 37
  9. 149
  10. 149
  11. 151
  12. 99
  13. 22
  14. Neither
  15. 32
  16. 60
  17. 115
  18. 65
  19. 27
  20. 146
  21. Complementary
  22. 35
  23. 140
  24. Supplementary
  25. 60
  26. 25
  27. 51
  28. 66
  29. 24
  30. 63
  31. Supplementary
  32. 43
  33. 75
  34. 45
  35. 72
  36. 30
  37. 65
  38. 132
  39. 64
  40. 63

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