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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 783 · 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 52° and 128° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  3. 3.What is the complement of 60° (in degrees)?
  4. 4.Are 66° and 24° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.Two straight lines cross each other. One of the angles formed is 133°. What is the angle vertically opposite to it (in degrees)?
  6. 6.What is the supplement of 167° (in degrees)?
  7. 7.What is the supplement of 140° (in degrees)?
  8. 8.What is the supplement of 152° (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 87°. What is its alternate interior angle (in degrees)?
  10. 10.What is the complement of 72° (in degrees)?
  11. 11.What is the complement of 30° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 104°. What is its alternate interior angle (in degrees)?
  13. 13.Are 36° and 116° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.What is the supplement of 80° (in degrees)?
  15. 15.What is the complement of 82° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 28°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the supplement of 128° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One angle is 135°. What is its corresponding angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 143°. What is the angle next to it on the same line (in degrees)?
  20. 20.Are 30° and 150° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.What is the supplement of 112° (in degrees)?
  22. 22.What is the supplement of 11° (in degrees)?
  23. 23.What is the complement of 9° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 45°. What is the angle vertically opposite to it (in degrees)?
  25. 25.What is the complement of 40° (in degrees)?
  26. 26.Are 32° and 148° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  27. 27.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the supplement of 16° (in degrees)?
  29. 29.What is the supplement of 130° (in degrees)?
  30. 30.What is the supplement of 122° (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 63°. What is its other interior angle on the same side of the transversal (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 119°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 86°. What is its corresponding angle (in degrees)?
  34. 34.What is the supplement of 68° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 158°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the supplement of 76° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 135°. What is its alternate interior angle (in degrees)?
  39. 39.Are 15° and 75° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  40. 40.Are 31° and 59° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. Supplementary
  2. 60
  3. 30
  4. Complementary
  5. 133
  6. 13
  7. 40
  8. 28
  9. 87
  10. 18
  11. 60
  12. 104
  13. Neither
  14. 100
  15. 8
  16. 28
  17. 52
  18. 135
  19. 37
  20. Supplementary
  21. 68
  22. 169
  23. 81
  24. 45
  25. 50
  26. Supplementary
  27. 47
  28. 164
  29. 50
  30. 58
  31. 117
  32. 119
  33. 86
  34. 112
  35. 158
  36. 64
  37. 104
  38. 135
  39. Complementary
  40. Complementary

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