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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 188 · 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 80°. What is its corresponding angle (in degrees)?
  2. 2.What is the complement of 65° (in degrees)?
  3. 3.What is the supplement of 99° (in degrees)?
  4. 4.What is the supplement of 63° (in degrees)?
  5. 5.Are 60° and 30° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  6. 6.What is the complement of 74° (in degrees)?
  7. 7.What is the complement of 84° (in degrees)?
  8. 8.Are 36° and 144° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.What is the complement of 31° (in degrees)?
  10. 10.What is the complement of 62° (in degrees)?
  11. 11.What is the complement of 6° (in degrees)?
  12. 12.Two angles are complementary. One is 44° 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 114°. What is the angle vertically opposite to it (in degrees)?
  14. 14.What is the complement of 56° (in degrees)?
  15. 15.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the supplement of 100° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 158°. What is the angle vertically opposite to it (in degrees)?
  18. 18.What is the supplement of 87° (in degrees)?
  19. 19.Are 34° and 146° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.What is the complement of 73° (in degrees)?
  21. 21.Are 26° and 154° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.Two parallel lines are cut by a transversal. One angle is 147°. What is its corresponding angle (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 132°. What is the angle vertically opposite to it (in degrees)?
  24. 24.What is the supplement of 138° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 98°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 146°. What is its corresponding angle (in degrees)?
  27. 27.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  29. 29.Are 67° and 23° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  30. 30.What is the complement of 52° (in degrees)?
  31. 31.What is the supplement of 22° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 53°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.What is the supplement of 70° (in degrees)?
  34. 34.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 29° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 35°. What is its corresponding angle (in degrees)?
  37. 37.What is the complement of 12° (in degrees)?
  38. 38.What is the supplement of 173° (in degrees)?
  39. 39.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 80
  2. 25
  3. 81
  4. 117
  5. Complementary
  6. 16
  7. 6
  8. Supplementary
  9. 59
  10. 28
  11. 84
  12. 67
  13. 114
  14. 34
  15. 122
  16. 80
  17. 158
  18. 93
  19. Supplementary
  20. 17
  21. Supplementary
  22. 147
  23. 132
  24. 42
  25. 82
  26. 146
  27. 104
  28. 77
  29. Complementary
  30. 38
  31. 158
  32. 127
  33. 110
  34. 54
  35. 61
  36. 35
  37. 78
  38. 7
  39. 96
  40. 66

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