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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 364 · 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 supplement of 125° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 126°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the complement of 28° (in degrees)?
  4. 4.What is the complement of 85° (in degrees)?
  5. 5.What is the supplement of 58° (in degrees)?
  6. 6.What is the complement of 49° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 47°. What is its alternate interior angle (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 76°. What is the angle vertically opposite to it (in degrees)?
  9. 9.Are 56° and 34° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  10. 10.Two parallel lines are cut by a transversal. One angle is 64°. What is its corresponding angle (in degrees)?
  11. 11.What is the supplement of 90° (in degrees)?
  12. 12.Are 50° and 40° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  13. 13.What is the supplement of 103° (in degrees)?
  14. 14.Are 51° and 39° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  15. 15.What is the complement of 35° (in degrees)?
  16. 16.What is the supplement of 96° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 72°. What is the angle next to it on the same line (in degrees)?
  18. 18.What is the complement of 10° (in degrees)?
  19. 19.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 115°. What is its alternate interior angle (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 112°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 134°. What is its corresponding angle (in degrees)?
  24. 24.Are 19° and 71° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  25. 25.Two straight lines cross each other. One of the angles formed is 73°. What is the angle vertically opposite to it (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 156°. What is the angle next to it on the same line (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 111°. What is the angle next to it on the same line (in degrees)?
  28. 28.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its alternate interior angle (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 146°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Are 20° and 70° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.Are 26° and 64° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  33. 33.What is the supplement of 147° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 132°. What is the angle next to it on the same line (in degrees)?
  35. 35.Are 46° and 48° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 31° and 59° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  38. 38.Are 22° and 46° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  39. 39.What is the supplement of 82° (in degrees)?
  40. 40.What is the supplement of 48° (in degrees)?

Answer key

  1. 55
  2. 126
  3. 62
  4. 5
  5. 122
  6. 41
  7. 47
  8. 76
  9. Complementary
  10. 64
  11. 90
  12. Complementary
  13. 77
  14. Complementary
  15. 55
  16. 84
  17. 108
  18. 80
  19. 132
  20. 115
  21. 112
  22. 128
  23. 134
  24. Complementary
  25. 73
  26. 24
  27. 69
  28. 66
  29. 145
  30. 146
  31. Complementary
  32. Complementary
  33. 33
  34. 48
  35. Neither
  36. 102
  37. Complementary
  38. Neither
  39. 98
  40. 132

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