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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 435 · 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 26° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 76°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 103°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  5. 5.What is the complement of 21° (in degrees)?
  6. 6.What is the complement of 5° (in degrees)?
  7. 7.What is the supplement of 26° (in degrees)?
  8. 8.Are 14° and 48° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.What is the supplement of 24° (in degrees)?
  10. 10.What is the supplement of 58° (in degrees)?
  11. 11.Are 43° and 130° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  12. 12.What is the supplement of 92° (in degrees)?
  13. 13.What is the complement of 63° (in degrees)?
  14. 14.Are 26° and 154° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  15. 15.Are 16° and 74° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  16. 16.Two straight lines cross each other. One of the angles formed is 155°. What is the angle next to it on the same line (in degrees)?
  17. 17.Are 28° and 152° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  18. 18.Are 32° and 148° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 137°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  21. 21.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)?
  22. 22.Are 67° and 23° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  23. 23.Two straight lines cross each other. One of the angles formed is 98°. What is the angle next to it on the same line (in degrees)?
  24. 24.Are 66° and 114° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  25. 25.Two straight lines cross each other. One of the angles formed is 89°. What is the angle next to it on the same line (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 127°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.What is the complement of 50° (in degrees)?
  28. 28.What is the supplement of 16° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its alternate interior angle (in degrees)?
  30. 30.What is the complement of 20° (in degrees)?
  31. 31.What is the complement of 45° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 34°. What is its alternate interior angle (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 42°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 136°. What is its corresponding angle (in degrees)?
  35. 35.Are 19° and 161° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  36. 36.Are 45° and 45° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  37. 37.What is the complement of 17° (in degrees)?
  38. 38.What is the complement of 73° (in degrees)?
  39. 39.What is the complement of 53° (in degrees)?
  40. 40.What is the complement of 11° (in degrees)?

Answer key

  1. 64
  2. 76
  3. 77
  4. 151
  5. 69
  6. 85
  7. 154
  8. Neither
  9. 156
  10. 122
  11. Neither
  12. 88
  13. 27
  14. Supplementary
  15. Complementary
  16. 25
  17. Supplementary
  18. Supplementary
  19. 43
  20. 112
  21. 48
  22. Complementary
  23. 82
  24. Supplementary
  25. 91
  26. 53
  27. 40
  28. 164
  29. 111
  30. 70
  31. 45
  32. 34
  33. 42
  34. 136
  35. Supplementary
  36. Complementary
  37. 73
  38. 17
  39. 37
  40. 79

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