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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 984 · 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 157°. What is the angle next to it on the same line (in degrees)?
  2. 2.Are 74° and 16° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.What is the supplement of 23° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 150°. What is its alternate interior angle (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 87°. What is its alternate interior angle (in degrees)?
  6. 6.What is the supplement of 174° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 95°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 158°. What is the angle vertically opposite to it (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 100°. What is the angle vertically opposite to it (in degrees)?
  10. 10.What is the complement of 30° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 86°. What is its corresponding angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 31°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 64°. What is its corresponding angle (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 37°. What is the angle next to it on the same line (in degrees)?
  15. 15.What is the supplement of 140° (in degrees)?
  16. 16.What is the complement of 19° (in degrees)?
  17. 17.What is the supplement of 101° (in degrees)?
  18. 18.What is the complement of 72° (in degrees)?
  19. 19.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 73°. What is its corresponding angle (in degrees)?
  21. 21.What is the supplement of 96° (in degrees)?
  22. 22.What is the complement of 12° (in degrees)?
  23. 23.Are 15° and 105° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  24. 24.What is the complement of 5° (in degrees)?
  25. 25.Are 12° and 110° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  26. 26.Two straight lines cross each other. One of the angles formed is 42°. What is the angle vertically opposite to it (in degrees)?
  27. 27.What is the complement of 76° (in degrees)?
  28. 28.What is the complement of 7° (in degrees)?
  29. 29.What is the supplement of 157° (in degrees)?
  30. 30.What is the supplement of 31° (in degrees)?
  31. 31.What is the supplement of 118° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 26°. What is the angle next to it on the same line (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 124°. What is its corresponding angle (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 107°. What is the angle next to it on the same line (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 147°. What is its corresponding angle (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 119°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 97°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its alternate interior angle (in degrees)?

Answer key

  1. 23
  2. Complementary
  3. 157
  4. 150
  5. 87
  6. 6
  7. 95
  8. 158
  9. 100
  10. 60
  11. 86
  12. 31
  13. 64
  14. 143
  15. 40
  16. 71
  17. 79
  18. 18
  19. 130
  20. 73
  21. 84
  22. 78
  23. Neither
  24. 85
  25. Neither
  26. 42
  27. 14
  28. 83
  29. 23
  30. 149
  31. 62
  32. 86
  33. 154
  34. 124
  35. 73
  36. 147
  37. 119
  38. 97
  39. 64
  40. 30

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