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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 569 · 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 121° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
  3. 3.What is the complement of 38° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One angle is 111°. What is its corresponding angle (in degrees)?
  5. 5.Are 62° and 38° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 31°. What is its alternate interior angle (in degrees)?
  7. 7.What is the supplement of 119° (in degrees)?
  8. 8.What is the supplement of 95° (in degrees)?
  9. 9.What is the complement of 56° (in degrees)?
  10. 10.Are 15° and 63° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  11. 11.What is the complement of 60° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 52°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Are 13° and 77° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 58°. What is its alternate interior angle (in degrees)?
  15. 15.What is the complement of 47° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 118°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 67°. What is the angle vertically opposite to it (in degrees)?
  18. 18.What is the supplement of 41° (in degrees)?
  19. 19.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 105°. What is its corresponding angle (in degrees)?
  21. 21.What is the complement of 23° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 95°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 127°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 37° (in degrees)?
  27. 27.Are 46° and 134° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.What is the supplement of 45° (in degrees)?
  29. 29.What is the supplement of 133° (in degrees)?
  30. 30.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  32. 32.Are 29° and 151° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  33. 33.What is the supplement of 155° (in degrees)?
  34. 34.Are 34° and 146° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  35. 35.Are 60° and 30° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the supplement of 25° (in degrees)?
  38. 38.What is the complement of 77° (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 91°. What is its other interior angle on the same side of the transversal (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 37°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 59
  2. 39
  3. 52
  4. 111
  5. Neither
  6. 31
  7. 61
  8. 85
  9. 34
  10. Neither
  11. 30
  12. 128
  13. Complementary
  14. 58
  15. 43
  16. 118
  17. 67
  18. 139
  19. 47
  20. 105
  21. 67
  22. 85
  23. 127
  24. 49
  25. 112
  26. 143
  27. Supplementary
  28. 135
  29. 47
  30. 57
  31. 76
  32. Supplementary
  33. 25
  34. Supplementary
  35. Complementary
  36. 59
  37. 155
  38. 13
  39. 89
  40. 143

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