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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 499 · 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 43° (in degrees)?
  2. 2.What is the supplement of 18° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 126°. What is the angle vertically opposite to it (in degrees)?
  4. 4.What is the complement of 27° (in degrees)?
  5. 5.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the supplement of 170° (in degrees)?
  7. 7.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  8. 8.What is the supplement of 12° (in degrees)?
  9. 9.Are 10° and 80° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  10. 10.Two parallel lines are cut by a transversal. One angle is 113°. What is its corresponding angle (in degrees)?
  11. 11.What is the complement of 52° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.What is the complement of 12° (in degrees)?
  14. 14.What is the supplement of 63° (in degrees)?
  15. 15.What is the complement of 23° (in degrees)?
  16. 16.What is the complement of 26° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 113°. What is the angle next to it on the same line (in degrees)?
  18. 18.What is the supplement of 144° (in degrees)?
  19. 19.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  20. 20.Are 25° and 155° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
  22. 22.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 92°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the complement of 16° (in degrees)?
  26. 26.What is the complement of 17° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 37°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 83°. What is its corresponding angle (in degrees)?
  29. 29.What is the complement of 9° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 96°. What is the angle next to it on the same line (in degrees)?
  31. 31.What is the complement of 45° (in degrees)?
  32. 32.What is the supplement of 27° (in degrees)?
  33. 33.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 15° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 133°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Are 57° and 33° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  38. 38.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)?
  39. 39.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 27° and 63° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

Answer key

  1. 137
  2. 162
  3. 126
  4. 63
  5. 80
  6. 10
  7. 52
  8. 168
  9. Complementary
  10. 113
  11. 38
  12. 57
  13. 78
  14. 117
  15. 67
  16. 64
  17. 67
  18. 36
  19. 117
  20. Supplementary
  21. 51
  22. 73
  23. 92
  24. 69
  25. 74
  26. 73
  27. 37
  28. 83
  29. 81
  30. 84
  31. 45
  32. 153
  33. 48
  34. 107
  35. 75
  36. 133
  37. Complementary
  38. 71
  39. 103
  40. Complementary

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