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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 886 · 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 angle is 115°. What is its corresponding angle (in degrees)?
  2. 2.Are 14° and 76° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  3. 3.What is the supplement of 171° (in degrees)?
  4. 4.What is the complement of 21° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 63°. What is the angle vertically opposite to it (in degrees)?
  6. 6.What is the supplement of 18° (in degrees)?
  7. 7.What is the supplement of 142° (in degrees)?
  8. 8.What is the complement of 7° (in degrees)?
  9. 9.Are 66° and 24° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.What is the complement of 25° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 108°. What is its alternate interior angle (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 35°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.What is the supplement of 21° (in degrees)?
  14. 14.Two angles are supplementary. One is 108° more than the other. What is the bigger angle (in degrees)?
  15. 15.Are 45° and 22° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  16. 16.What is the supplement of 20° (in degrees)?
  17. 17.Are 20° and 70° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  18. 18.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  19. 19.What is the complement of 19° (in degrees)?
  20. 20.Are 64° and 32° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.Two straight lines cross each other. One of the angles formed is 62°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 85° (in degrees)?
  24. 24.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 88° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its alternate interior angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its alternate interior angle (in degrees)?
  29. 29.Are 48° and 42° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  30. 30.Two parallel lines are cut by a transversal. One angle is 47°. What is its corresponding angle (in degrees)?
  31. 31.What is the complement of 78° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 92°. What is the angle vertically opposite to it (in degrees)?
  33. 33.What is the complement of 18° (in degrees)?
  34. 34.Are 70° and 20° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.Two angles are supplementary. One is 134° more than the other. What is the bigger angle (in degrees)?
  36. 36.What is the supplement of 24° (in degrees)?
  37. 37.What is the complement of 66° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 20°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Are 54° and 126° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  40. 40.What is the complement of 69° (in degrees)?

Answer key

  1. 115
  2. Complementary
  3. 9
  4. 69
  5. 63
  6. 162
  7. 38
  8. 83
  9. Complementary
  10. 65
  11. 108
  12. 145
  13. 159
  14. 144
  15. Neither
  16. 160
  17. Complementary
  18. 76
  19. 71
  20. Neither
  21. 62
  22. 68
  23. 5
  24. 56
  25. 66
  26. 92
  27. 56
  28. 30
  29. Complementary
  30. 47
  31. 12
  32. 92
  33. 72
  34. Complementary
  35. 157
  36. 156
  37. 24
  38. 20
  39. Supplementary
  40. 21

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