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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 702 · 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 19° (in degrees)?
  2. 2.What is the supplement of 119° (in degrees)?
  3. 3.What is the complement of 29° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 134°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 140°. What is the angle next to it on the same line (in degrees)?
  6. 6.What is the complement of 20° (in degrees)?
  7. 7.What is the supplement of 49° (in degrees)?
  8. 8.What is the supplement of 91° (in degrees)?
  9. 9.Are 37° and 29° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.What is the complement of 39° (in degrees)?
  11. 11.What is the complement of 8° (in degrees)?
  12. 12.What is the supplement of 73° (in degrees)?
  13. 13.What is the supplement of 78° (in degrees)?
  14. 14.What is the complement of 47° (in degrees)?
  15. 15.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 139°. What is its alternate interior angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 53°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its other interior angle on the same side of the transversal (in degrees)?
  19. 19.Are 12° and 78° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  20. 20.Are 18° and 72° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.Two straight lines cross each other. One of the angles formed is 41°. What is the angle vertically opposite to it (in degrees)?
  22. 22.What is the supplement of 36° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 54°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Are 66° and 114° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  25. 25.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 41° (in degrees)?
  27. 27.What is the supplement of 25° (in degrees)?
  28. 28.Are 45° and 45° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  29. 29.What is the supplement of 8° (in degrees)?
  30. 30.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  31. 31.What is the supplement of 48° (in degrees)?
  32. 32.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  33. 33.Are 63° and 117° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  34. 34.Are 52° and 38° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  35. 35.Are 57° and 33° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.Are 77° and 13° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  37. 37.Are 64° and 93° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  38. 38.Two parallel lines are cut by a transversal. One angle is 117°. What is its corresponding angle (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 82°. What is the angle next to it on the same line (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 75°. What is its alternate interior angle (in degrees)?

Answer key

  1. 161
  2. 61
  3. 61
  4. 46
  5. 40
  6. 70
  7. 131
  8. 89
  9. Neither
  10. 51
  11. 82
  12. 107
  13. 102
  14. 43
  15. 139
  16. 139
  17. 127
  18. 120
  19. Complementary
  20. Complementary
  21. 41
  22. 144
  23. 54
  24. Supplementary
  25. 59
  26. 139
  27. 155
  28. Complementary
  29. 172
  30. 53
  31. 132
  32. 120
  33. Supplementary
  34. Complementary
  35. Complementary
  36. Complementary
  37. Neither
  38. 117
  39. 98
  40. 75

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