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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 583 · 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 73° (in degrees)?
  2. 2.What is the supplement of 5° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 101°. What is the angle vertically opposite to it (in degrees)?
  4. 4.What is the supplement of 60° (in degrees)?
  5. 5.What is the complement of 53° (in degrees)?
  6. 6.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the supplement of 144° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 27°. What is the angle next to it on the same line (in degrees)?
  9. 9.What is the complement of 65° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
  11. 11.What is the supplement of 14° (in degrees)?
  12. 12.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the complement of 60° (in degrees)?
  14. 14.Are 49° and 131° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  15. 15.Two parallel lines are cut by a transversal. One angle is 74°. What is its corresponding angle (in degrees)?
  16. 16.What is the complement of 66° (in degrees)?
  17. 17.Are 38° and 52° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  18. 18.What is the supplement of 15° (in degrees)?
  19. 19.What is the complement of 20° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 86°. What is the angle next to it on the same line (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 116°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.What is the complement of 19° (in degrees)?
  23. 23.What is the complement of 70° (in degrees)?
  24. 24.Are 10° and 40° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  25. 25.What is the supplement of 150° (in degrees)?
  26. 26.Are 13° and 77° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  27. 27.What is the complement of 13° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 144°. What is the angle next to it on the same line (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its alternate interior angle (in degrees)?
  30. 30.Are 71° and 109° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 90°. What is its alternate interior angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 132°. What is its corresponding angle (in degrees)?
  33. 33.Are 59° and 31° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 12° (in degrees)?
  36. 36.What is the supplement of 65° (in degrees)?
  37. 37.What is the supplement of 121° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 60°. What is its corresponding angle (in degrees)?
  39. 39.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 78°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 107
  2. 175
  3. 101
  4. 120
  5. 37
  6. 148
  7. 36
  8. 153
  9. 25
  10. 39
  11. 166
  12. 151
  13. 30
  14. Supplementary
  15. 74
  16. 24
  17. Complementary
  18. 165
  19. 70
  20. 94
  21. 64
  22. 71
  23. 20
  24. Neither
  25. 30
  26. Complementary
  27. 77
  28. 36
  29. 123
  30. Supplementary
  31. 90
  32. 132
  33. Complementary
  34. 80
  35. 78
  36. 115
  37. 59
  38. 60
  39. 74
  40. 78

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