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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 425 · 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 complement of 27° (in degrees)?
  2. 2.Are 12° and 18° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.Are 74° and 16° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 64°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One angle is 78°. What is its corresponding angle (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 36°. What is the angle vertically opposite to it (in degrees)?
  7. 7.Are 19° and 161° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  8. 8.Are 58° and 122° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.Two parallel lines are cut by a transversal. One angle is 113°. What is its corresponding angle (in degrees)?
  10. 10.What is the complement of 52° (in degrees)?
  11. 11.What is the complement of 5° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 82°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 133°. What is the angle next to it on the same line (in degrees)?
  14. 14.What is the complement of 42° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 136°. What is the angle next to it on the same line (in degrees)?
  16. 16.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the complement of 70° (in degrees)?
  18. 18.What is the supplement of 100° (in degrees)?
  19. 19.What is the complement of 53° (in degrees)?
  20. 20.Are 69° and 111° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.What is the complement of 14° (in degrees)?
  22. 22.Two angles are supplementary. One is 78° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 68°. What is its alternate interior angle (in degrees)?
  24. 24.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 119°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the supplement of 164° (in degrees)?
  27. 27.Are 67° and 23° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  28. 28.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the complement of 6° (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One angle is 33°. What is its corresponding angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 112°. What is the angle vertically opposite to it (in degrees)?
  32. 32.What is the complement of 64° (in degrees)?
  33. 33.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  34. 34.Are 38° and 52° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.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)?
  36. 36.Two angles are supplementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its other interior angle on the same side of the transversal (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 93°. What is its corresponding angle (in degrees)?
  39. 39.What is the supplement of 57° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 95°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 63
  2. Neither
  3. Complementary
  4. 116
  5. 78
  6. 36
  7. Supplementary
  8. Supplementary
  9. 113
  10. 38
  11. 85
  12. 82
  13. 47
  14. 48
  15. 44
  16. 68
  17. 20
  18. 80
  19. 37
  20. Supplementary
  21. 76
  22. 129
  23. 68
  24. 64
  25. 119
  26. 16
  27. Complementary
  28. 92
  29. 84
  30. 33
  31. 112
  32. 26
  33. 75
  34. Complementary
  35. 89
  36. 116
  37. 69
  38. 93
  39. 123
  40. 95

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