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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 729 · 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.Two parallel lines are cut by a transversal. One interior angle is 62°. What is its other interior angle on the same side of the transversal (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 51°. What is the angle next to it on the same line (in degrees)?
  3. 3.Are 39° and 141° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 94°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.What is the complement of 26° (in degrees)?
  6. 6.Are 50° and 40° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.What is the supplement of 54° (in degrees)?
  8. 8.What is the supplement of 20° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 48°. What is the angle vertically opposite to it (in degrees)?
  10. 10.What is the supplement of 95° (in degrees)?
  11. 11.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the supplement of 13° (in degrees)?
  13. 13.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  14. 14.Are 22° and 58° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  15. 15.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)?
  16. 16.Two straight lines cross each other. One of the angles formed is 67°. What is the angle next to it on the same line (in degrees)?
  17. 17.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the complement of 67° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 104°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 124°. What is its alternate interior angle (in degrees)?
  21. 21.What is the supplement of 151° (in degrees)?
  22. 22.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  23. 23.Are 75° and 105° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Are 15° and 165° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  25. 25.Are 11° and 79° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  26. 26.What is the complement of 16° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One angle is 110°. What is its corresponding angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 35°. What is its corresponding angle (in degrees)?
  29. 29.What is the supplement of 173° (in degrees)?
  30. 30.What is the complement of 58° (in degrees)?
  31. 31.What is the complement of 39° (in degrees)?
  32. 32.What is the supplement of 62° (in degrees)?
  33. 33.What is the complement of 83° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 112°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two angles are supplementary. One is 76° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the supplement of 132° (in degrees)?
  39. 39.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 32° and 148° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary

Answer key

  1. 118
  2. 129
  3. Supplementary
  4. 86
  5. 64
  6. Complementary
  7. 126
  8. 160
  9. 48
  10. 85
  11. 77
  12. 167
  13. 73
  14. Neither
  15. 129
  16. 113
  17. 143
  18. 23
  19. 104
  20. 124
  21. 29
  22. 51
  23. Supplementary
  24. Supplementary
  25. Complementary
  26. 74
  27. 110
  28. 35
  29. 7
  30. 32
  31. 51
  32. 118
  33. 7
  34. 112
  35. 75
  36. 128
  37. 136
  38. 48
  39. 78
  40. Supplementary

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