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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 992 · 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 145° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 100°. What is the angle vertically opposite to it (in degrees)?
  4. 4.What is the supplement of 112° (in degrees)?
  5. 5.What is the complement of 14° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 134°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.What is the supplement of 16° (in degrees)?
  8. 8.What is the complement of 78° (in degrees)?
  9. 9.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 49°. What is the angle next to it on the same line (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 59°. What is the angle vertically opposite to it (in degrees)?
  13. 13.What is the supplement of 55° (in degrees)?
  14. 14.What is the supplement of 160° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 109°. What is its other interior angle on the same side of the transversal (in degrees)?
  16. 16.What is the complement of 55° (in degrees)?
  17. 17.What is the complement of 79° (in degrees)?
  18. 18.Are 26° and 154° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.What is the supplement of 94° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 56°. What is the angle vertically opposite to it (in degrees)?
  21. 21.What is the supplement of 73° (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 116°. What is its corresponding angle (in degrees)?
  23. 23.What is the supplement of 100° (in degrees)?
  24. 24.What is the complement of 60° (in degrees)?
  25. 25.What is the supplement of 87° (in degrees)?
  26. 26.What is the complement of 63° (in degrees)?
  27. 27.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the complement of 33° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 116°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Are 23° and 134° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.Two straight lines cross each other. One of the angles formed is 96°. What is the angle vertically opposite to it (in degrees)?
  32. 32.What is the supplement of 103° (in degrees)?
  33. 33.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  34. 34.Are 65° and 115° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  35. 35.Are 34° and 56° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the supplement of 26° (in degrees)?
  38. 38.What is the supplement of 151° (in degrees)?
  39. 39.What is the supplement of 20° (in degrees)?
  40. 40.Two angles are supplementary. One is 100° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 20
  2. 35
  3. 100
  4. 68
  5. 76
  6. 46
  7. 164
  8. 12
  9. 105
  10. 78
  11. 131
  12. 59
  13. 125
  14. 20
  15. 71
  16. 35
  17. 11
  18. Supplementary
  19. 86
  20. 56
  21. 107
  22. 116
  23. 80
  24. 30
  25. 93
  26. 27
  27. 151
  28. 57
  29. 116
  30. Neither
  31. 96
  32. 77
  33. 93
  34. Supplementary
  35. Complementary
  36. 47
  37. 154
  38. 29
  39. 160
  40. 140

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