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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 814 · 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) Neither (b) Complementary (c) Supplementary
  2. 2.What is the complement of 64° (in degrees)?
  3. 3.What is the supplement of 43° (in degrees)?
  4. 4.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the supplement of 7° (in degrees)?
  6. 6.What is the supplement of 30° (in degrees)?
  7. 7.Are 14° and 76° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  8. 8.What is the supplement of 62° (in degrees)?
  9. 9.Are 75° and 54° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  10. 10.What is the supplement of 15° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 142°. What is its corresponding angle (in degrees)?
  12. 12.What is the complement of 42° (in degrees)?
  13. 13.Are 34° and 146° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 108°. What is its other interior angle on the same side of the transversal (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 94°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.Are 18° and 72° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  18. 18.What is the complement of 33° (in degrees)?
  19. 19.Are 66° and 114° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  20. 20.Two straight lines cross each other. One of the angles formed is 115°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  22. 22.Are 68° and 112° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  23. 23.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 61°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.What is the supplement of 39° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its alternate interior angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 90°. What is the angle next to it on the same line (in degrees)?
  28. 28.Are 56° and 124° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  29. 29.What is the complement of 26° (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 134°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.Are 28° and 62° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.Two straight lines cross each other. One of the angles formed is 66°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the complement of 19° (in degrees)?
  34. 34.What is the complement of 39° (in degrees)?
  35. 35.What is the complement of 18° (in degrees)?
  36. 36.What is the supplement of 154° (in degrees)?
  37. 37.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the complement of 83° (in degrees)?
  40. 40.What is the complement of 60° (in degrees)?

Answer key

  1. Complementary
  2. 26
  3. 137
  4. 105
  5. 173
  6. 150
  7. Complementary
  8. 118
  9. Neither
  10. 165
  11. 142
  12. 48
  13. Supplementary
  14. 72
  15. 94
  16. 129
  17. Complementary
  18. 57
  19. Supplementary
  20. 115
  21. 96
  22. Supplementary
  23. 67
  24. 119
  25. 141
  26. 45
  27. 90
  28. Supplementary
  29. 64
  30. 46
  31. Complementary
  32. 114
  33. 71
  34. 51
  35. 72
  36. 26
  37. 46
  38. 55
  39. 7
  40. 30

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