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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 537 · 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 straight lines cross each other. One of the angles formed is 88°. What is the angle vertically opposite to it (in degrees)?
  2. 2.What is the supplement of 88° (in degrees)?
  3. 3.Are 24° and 38° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  4. 4.Two straight lines cross each other. One of the angles formed is 106°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 55°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the supplement of 23° (in degrees)?
  8. 8.What is the complement of 45° (in degrees)?
  9. 9.What is the supplement of 103° (in degrees)?
  10. 10.Are 10° and 137° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  11. 11.Two straight lines cross each other. One of the angles formed is 42°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the supplement of 120° (in degrees)?
  15. 15.What is the complement of 15° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 53°. What is the angle next to it on the same line (in degrees)?
  17. 17.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 28°. What is the angle next to it on the same line (in degrees)?
  19. 19.Are 11° and 79° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  20. 20.What is the complement of 22° (in degrees)?
  21. 21.Are 49° and 41° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.What is the supplement of 64° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 109°. What is the angle next to it on the same line (in degrees)?
  24. 24.What is the complement of 11° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 62°. What is the angle vertically opposite to it (in degrees)?
  26. 26.Are 14° and 124° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  27. 27.Two straight lines cross each other. One of the angles formed is 22°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 82°. What is its other interior angle on the same side of the transversal (in degrees)?
  29. 29.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 103°. What is the angle vertically opposite to it (in degrees)?
  31. 31.What is the complement of 62° (in degrees)?
  32. 32.What is the complement of 77° (in degrees)?
  33. 33.What is the complement of 12° (in degrees)?
  34. 34.Are 65° and 25° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.What is the complement of 76° (in degrees)?
  36. 36.What is the supplement of 13° (in degrees)?
  37. 37.What is the supplement of 137° (in degrees)?
  38. 38.Are 56° and 135° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  39. 39.What is the supplement of 48° (in degrees)?
  40. 40.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 88
  2. 92
  3. Neither
  4. 74
  5. 125
  6. 80
  7. 157
  8. 45
  9. 77
  10. Neither
  11. 42
  12. 137
  13. 132
  14. 60
  15. 75
  16. 127
  17. 66
  18. 152
  19. Complementary
  20. 68
  21. Complementary
  22. 116
  23. 71
  24. 79
  25. 62
  26. Neither
  27. 22
  28. 98
  29. 67
  30. 103
  31. 28
  32. 13
  33. 78
  34. Complementary
  35. 14
  36. 167
  37. 43
  38. Neither
  39. 132
  40. 59

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