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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 906 · 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 14° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 84°. What is its corresponding angle (in degrees)?
  3. 3.What is the complement of 40° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 61°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Are 61° and 119° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  6. 6.Two parallel lines are cut by a transversal. One angle is 37°. What is its corresponding angle (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 92°. What is its corresponding angle (in degrees)?
  8. 8.Are 39° and 51° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.Are 21° and 69° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  10. 10.What is the complement of 46° (in degrees)?
  11. 11.What is the complement of 10° (in degrees)?
  12. 12.What is the complement of 51° (in degrees)?
  13. 13.What is the complement of 22° (in degrees)?
  14. 14.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the complement of 32° (in degrees)?
  16. 16.What is the supplement of 39° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
  18. 18.What is the supplement of 127° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 119°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.Are 56° and 63° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  21. 21.Are 20° and 70° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.Are 23° and 140° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  23. 23.What is the supplement of 50° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 143°. What is the angle vertically opposite to it (in degrees)?
  25. 25.What is the supplement of 97° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 46°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 55°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  30. 30.Are 54° and 36° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  31. 31.Are 25° and 155° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  32. 32.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  33. 33.What is the supplement of 109° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 39°. What is the angle next to it on the same line (in degrees)?
  35. 35.What is the supplement of 45° (in degrees)?
  36. 36.What is the complement of 84° (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 86°. What is its corresponding angle (in degrees)?
  38. 38.What is the complement of 80° (in degrees)?
  39. 39.Are 35° and 139° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  40. 40.Two parallel lines are cut by a transversal. One angle is 126°. What is its corresponding angle (in degrees)?

Answer key

  1. 166
  2. 84
  3. 50
  4. 61
  5. Supplementary
  6. 37
  7. 92
  8. Complementary
  9. Complementary
  10. 44
  11. 80
  12. 39
  13. 68
  14. 105
  15. 58
  16. 141
  17. 51
  18. 53
  19. 61
  20. Neither
  21. Complementary
  22. Neither
  23. 130
  24. 143
  25. 83
  26. 135
  27. 46
  28. 55
  29. 143
  30. Complementary
  31. Supplementary
  32. 74
  33. 71
  34. 141
  35. 135
  36. 6
  37. 86
  38. 10
  39. Neither
  40. 126

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