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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 222 · 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 139°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 52°. What is its corresponding angle (in degrees)?
  3. 3.What is the supplement of 161° (in degrees)?
  4. 4.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its alternate interior angle (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  7. 7.What is the complement of 31° (in degrees)?
  8. 8.What is the complement of 32° (in degrees)?
  9. 9.What is the supplement of 78° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 45°. What is the angle next to it on the same line (in degrees)?
  11. 11.Are 11° and 169° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.Two straight lines cross each other. One of the angles formed is 58°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the supplement of 153° (in degrees)?
  15. 15.What is the complement of 8° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 31°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the supplement of 145° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 156°. What is the angle vertically opposite to it (in degrees)?
  19. 19.What is the complement of 65° (in degrees)?
  20. 20.What is the supplement of 135° (in degrees)?
  21. 21.What is the supplement of 110° (in degrees)?
  22. 22.Are 57° and 116° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  23. 23.Two straight lines cross each other. One of the angles formed is 117°. What is the angle vertically opposite to it (in degrees)?
  24. 24.What is the supplement of 137° (in degrees)?
  25. 25.What is the complement of 30° (in degrees)?
  26. 26.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 72°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the complement of 60° (in degrees)?
  29. 29.Are 10° and 170° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  30. 30.Two straight lines cross each other. One of the angles formed is 62°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Are 64° and 26° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.What is the complement of 56° (in degrees)?
  33. 33.Are 38° and 15° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.Two parallel lines are cut by a transversal. One angle is 134°. What is its corresponding angle (in degrees)?
  35. 35.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  36. 36.What is the supplement of 44° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the supplement of 11° (in degrees)?
  40. 40.What is the complement of 24° (in degrees)?

Answer key

  1. 139
  2. 52
  3. 19
  4. 121
  5. 60
  6. 24
  7. 59
  8. 58
  9. 102
  10. 135
  11. Supplementary
  12. 122
  13. 133
  14. 27
  15. 82
  16. 31
  17. 35
  18. 156
  19. 25
  20. 45
  21. 70
  22. Neither
  23. 117
  24. 43
  25. 60
  26. 48
  27. 72
  28. 30
  29. Supplementary
  30. 62
  31. Complementary
  32. 34
  33. Neither
  34. 134
  35. 52
  36. 136
  37. 147
  38. 55
  39. 169
  40. 66

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