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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 861 · 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 19° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 47°. What is the angle next to it on the same line (in degrees)?
  3. 3.Are 79° and 101° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  4. 4.Two straight lines cross each other. One of the angles formed is 110°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 106°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  7. 7.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)?
  8. 8.Are 62° and 74° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its other interior angle on the same side of the transversal (in degrees)?
  10. 10.What is the supplement of 88° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 136°. What is the angle next to it on the same line (in degrees)?
  12. 12.Are 14° and 76° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  13. 13.Are 41° and 139° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 55°. What is its alternate interior angle (in degrees)?
  16. 16.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the complement of 37° (in degrees)?
  18. 18.Are 78° and 12° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 134°. What is its alternate interior angle (in degrees)?
  20. 20.What is the complement of 24° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 60°. What is its corresponding angle (in degrees)?
  22. 22.What is the supplement of 14° (in degrees)?
  23. 23.Are 75° and 91° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 101° (in degrees)?
  26. 26.What is the supplement of 59° (in degrees)?
  27. 27.What is the complement of 28° (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its alternate interior angle (in degrees)?
  29. 29.What is the complement of 83° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Are 77° and 103° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  32. 32.Are 37° and 143° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  33. 33.Two straight lines cross each other. One of the angles formed is 71°. What is the angle next to it on the same line (in degrees)?
  34. 34.Are 29° and 61° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.What is the complement of 70° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 48°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 120°. What is its alternate interior angle (in degrees)?
  38. 38.Are 70° and 110° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  39. 39.Two straight lines cross each other. One of the angles formed is 144°. What is the angle next to it on the same line (in degrees)?
  40. 40.What is the complement of 6° (in degrees)?

Answer key

  1. 71
  2. 133
  3. Supplementary
  4. 110
  5. 106
  6. 59
  7. 154
  8. Neither
  9. 132
  10. 92
  11. 44
  12. Complementary
  13. Supplementary
  14. 154
  15. 55
  16. 93
  17. 53
  18. Complementary
  19. 134
  20. 66
  21. 60
  22. 166
  23. Neither
  24. 76
  25. 79
  26. 121
  27. 62
  28. 65
  29. 7
  30. 24
  31. Supplementary
  32. Supplementary
  33. 109
  34. Complementary
  35. 20
  36. 132
  37. 120
  38. Supplementary
  39. 36
  40. 84

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