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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 578 · 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 70° (in degrees)?
  2. 2.What is the supplement of 73° (in degrees)?
  3. 3.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the complement of 64° (in degrees)?
  5. 5.What is the supplement of 109° (in degrees)?
  6. 6.Are 56° and 34° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Are 19° and 71° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  8. 8.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the complement of 35° (in degrees)?
  10. 10.Two angles are supplementary. One is 124° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 64° and 26° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 145°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 140°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Are 78° and 102° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  16. 16.Are 22° and 68° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  17. 17.Are 29° and 151° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  18. 18.Two parallel lines are cut by a transversal. One angle is 80°. What is its corresponding angle (in degrees)?
  19. 19.Are 57° and 130° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  20. 20.Two straight lines cross each other. One of the angles formed is 118°. What is the angle next to it on the same line (in degrees)?
  21. 21.What is the complement of 31° (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 59°. What is its corresponding angle (in degrees)?
  24. 24.Two angles are complementary. One is 50° 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 69°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the supplement of 161° (in degrees)?
  27. 27.What is the complement of 17° (in degrees)?
  28. 28.What is the supplement of 39° (in degrees)?
  29. 29.What is the complement of 63° (in degrees)?
  30. 30.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Are 73° and 16° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  33. 33.Two straight lines cross each other. One of the angles formed is 114°. What is the angle next to it on the same line (in degrees)?
  34. 34.What is the supplement of 130° (in degrees)?
  35. 35.Are 23° and 157° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.Two angles are complementary. One is 18° 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 44°. 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 50°. What is its corresponding angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 48°. What is its corresponding angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 30°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 20
  2. 107
  3. 160
  4. 26
  5. 71
  6. Complementary
  7. Complementary
  8. 151
  9. 55
  10. 152
  11. Complementary
  12. 124
  13. 145
  14. 140
  15. Supplementary
  16. Complementary
  17. Supplementary
  18. 80
  19. Neither
  20. 62
  21. 59
  22. 32
  23. 59
  24. 70
  25. 69
  26. 19
  27. 73
  28. 141
  29. 27
  30. 58
  31. 155
  32. Neither
  33. 66
  34. 50
  35. Supplementary
  36. 54
  37. 136
  38. 50
  39. 48
  40. 150

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