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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 256 · 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 100°. What is its corresponding angle (in degrees)?
  2. 2.What is the supplement of 54° (in degrees)?
  3. 3.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 28°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Are 11° and 44° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.What is the supplement of 118° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its alternate interior angle (in degrees)?
  9. 9.What is the complement of 49° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 39°. What is its alternate interior angle (in degrees)?
  11. 11.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 116°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Are 35° and 129° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  14. 14.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
  15. 15.Are 12° and 97° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  16. 16.Two parallel lines are cut by a transversal. One angle is 121°. What is its corresponding angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 101°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  19. 19.What is the supplement of 101° (in degrees)?
  20. 20.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  21. 21.Are 23° and 157° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 48° (in degrees)?
  24. 24.What is the supplement of 55° (in degrees)?
  25. 25.What is the complement of 63° (in degrees)?
  26. 26.What is the supplement of 141° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 84°. What is its alternate interior angle (in degrees)?
  28. 28.What is the complement of 26° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 47°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Are 44° and 150° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.What is the complement of 8° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 107°. What is its corresponding angle (in degrees)?
  33. 33.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 32° (in degrees)?
  36. 36.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 73° and 107° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  38. 38.What is the complement of 52° (in degrees)?
  39. 39.What is the complement of 43° (in degrees)?
  40. 40.Are 13° and 138° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

Answer key

  1. 100
  2. 126
  3. 55
  4. 28
  5. 29
  6. Neither
  7. 62
  8. 32
  9. 41
  10. 39
  11. 66
  12. 116
  13. Neither
  14. 130
  15. Neither
  16. 121
  17. 101
  18. 80
  19. 79
  20. 102
  21. Supplementary
  22. 51
  23. 42
  24. 125
  25. 27
  26. 39
  27. 84
  28. 64
  29. 47
  30. Neither
  31. 82
  32. 107
  33. 49
  34. 67
  35. 58
  36. 47
  37. Supplementary
  38. 38
  39. 47
  40. Neither

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