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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 613 · 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 angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  2. 2.What is the complement of 24° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 94°. What is its corresponding angle (in degrees)?
  4. 4.Are 59° and 121° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  5. 5.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 43°. What is its corresponding angle (in degrees)?
  7. 7.What is the supplement of 44° (in degrees)?
  8. 8.Are 23° and 67° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  9. 9.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the supplement of 115° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 119°. What is its corresponding angle (in degrees)?
  12. 12.What is the supplement of 32° (in degrees)?
  13. 13.What is the supplement of 101° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its alternate interior angle (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 29°. What is the angle next to it on the same line (in degrees)?
  16. 16.Are 42° and 138° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  17. 17.Are 26° and 64° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  18. 18.What is the complement of 78° (in degrees)?
  19. 19.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  20. 20.What is the complement of 48° (in degrees)?
  21. 21.What is the complement of 37° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 149°. What is the angle next to it on the same line (in degrees)?
  23. 23.What is the complement of 54° (in degrees)?
  24. 24.What is the complement of 12° (in degrees)?
  25. 25.Are 49° and 50° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  26. 26.Are 52° and 38° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 122°. What is its alternate interior angle (in degrees)?
  28. 28.Are 33° and 57° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  29. 29.What is the complement of 85° (in degrees)?
  30. 30.Are 25° and 155° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.Two straight lines cross each other. One of the angles formed is 46°. What is the angle vertically opposite to it (in degrees)?
  32. 32.What is the complement of 25° (in degrees)?
  33. 33.What is the supplement of 36° (in degrees)?
  34. 34.What is the supplement of 166° (in degrees)?
  35. 35.Are 61° and 119° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  36. 36.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 52°. What is the angle vertically opposite to it (in degrees)?
  38. 38.What is the complement of 70° (in degrees)?
  39. 39.What is the complement of 19° (in degrees)?
  40. 40.Are 79° and 32° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

Answer key

  1. 73
  2. 66
  3. 94
  4. Supplementary
  5. 74
  6. 43
  7. 136
  8. Complementary
  9. 47
  10. 65
  11. 119
  12. 148
  13. 79
  14. 125
  15. 151
  16. Supplementary
  17. Complementary
  18. 12
  19. 107
  20. 42
  21. 53
  22. 31
  23. 36
  24. 78
  25. Neither
  26. Complementary
  27. 122
  28. Complementary
  29. 5
  30. Supplementary
  31. 46
  32. 65
  33. 144
  34. 14
  35. Supplementary
  36. 50
  37. 52
  38. 20
  39. 71
  40. Neither

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