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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 866 · 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 38° (in degrees)?
  2. 2.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)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.What is the complement of 32° (in degrees)?
  5. 5.What is the complement of 47° (in degrees)?
  6. 6.What is the complement of 49° (in degrees)?
  7. 7.What is the supplement of 131° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One angle is 59°. What is its corresponding angle (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 63°. What is its other interior angle on the same side of the transversal (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  11. 11.What is the complement of 33° (in degrees)?
  12. 12.What is the complement of 23° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 129°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 148°. What is its other interior angle on the same side of the transversal (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 124°. What is the angle next to it on the same line (in degrees)?
  16. 16.What is the supplement of 169° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 66°. What is the angle next to it on the same line (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 47°. What is the angle vertically opposite to it (in degrees)?
  19. 19.What is the complement of 35° (in degrees)?
  20. 20.What is the supplement of 70° (in degrees)?
  21. 21.What is the complement of 50° (in degrees)?
  22. 22.What is the supplement of 8° (in degrees)?
  23. 23.What is the complement of 46° (in degrees)?
  24. 24.What is the complement of 82° (in degrees)?
  25. 25.What is the supplement of 38° (in degrees)?
  26. 26.What is the supplement of 73° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 100°. What is the angle next to it on the same line (in degrees)?
  28. 28.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)?
  29. 29.Two straight lines cross each other. One of the angles formed is 150°. What is the angle vertically opposite to it (in degrees)?
  30. 30.What is the supplement of 151° (in degrees)?
  31. 31.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the complement of 22° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 82°. What is the angle next to it on the same line (in degrees)?
  34. 34.Are 15° and 75° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  35. 35.What is the supplement of 102° (in degrees)?
  36. 36.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 54° and 79° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  38. 38.What is the supplement of 106° (in degrees)?
  39. 39.What is the supplement of 32° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 79°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 52
  2. 64
  3. 135
  4. 58
  5. 43
  6. 41
  7. 49
  8. 59
  9. 117
  10. 60
  11. 57
  12. 67
  13. 129
  14. 32
  15. 56
  16. 11
  17. 114
  18. 47
  19. 55
  20. 110
  21. 40
  22. 172
  23. 44
  24. 8
  25. 142
  26. 107
  27. 80
  28. 153
  29. 150
  30. 29
  31. 52
  32. 68
  33. 98
  34. Complementary
  35. 78
  36. 136
  37. Neither
  38. 74
  39. 148
  40. 79

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