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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 103 · 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 116°. What is the angle next to it on the same line (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its alternate interior angle (in degrees)?
  3. 3.Are 37° and 53° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  4. 4.What is the complement of 11° (in degrees)?
  5. 5.What is the complement of 80° (in degrees)?
  6. 6.Are 78° and 12° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two angles are supplementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the complement of 6° (in degrees)?
  10. 10.Are 16° and 74° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  11. 11.Two parallel lines are cut by a transversal. One angle is 94°. What is its corresponding angle (in degrees)?
  12. 12.Two angles are supplementary. One is 114° more than the other. What is the bigger angle (in degrees)?
  13. 13.Are 25° and 155° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  14. 14.What is the complement of 81° (in degrees)?
  15. 15.What is the supplement of 137° (in degrees)?
  16. 16.What is the supplement of 164° (in degrees)?
  17. 17.What is the supplement of 15° (in degrees)?
  18. 18.What is the complement of 78° (in degrees)?
  19. 19.Are 46° and 127° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 94°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Are 32° and 58° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 70° (in degrees)?
  24. 24.Are 65° and 25° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  25. 25.Are 26° and 154° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  26. 26.Are 74° and 16° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 47°. What is its alternate interior angle (in degrees)?
  28. 28.Two angles are supplementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the complement of 8° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 153°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 135°. What is its alternate interior angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 99°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the supplement of 8° (in degrees)?
  35. 35.What is the supplement of 83° (in degrees)?
  36. 36.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)?
  37. 37.What is the complement of 75° (in degrees)?
  38. 38.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 118°. What is its alternate interior angle (in degrees)?
  40. 40.What is the complement of 51° (in degrees)?

Answer key

  1. 64
  2. 45
  3. Complementary
  4. 79
  5. 10
  6. Complementary
  7. 56
  8. 113
  9. 84
  10. Complementary
  11. 94
  12. 147
  13. Supplementary
  14. 9
  15. 43
  16. 16
  17. 165
  18. 12
  19. Neither
  20. 86
  21. Complementary
  22. 156
  23. 20
  24. Complementary
  25. Supplementary
  26. Complementary
  27. 47
  28. 95
  29. 82
  30. 153
  31. 135
  32. 99
  33. 122
  34. 172
  35. 97
  36. 80
  37. 15
  38. 148
  39. 118
  40. 39

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