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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 294 · 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 34° (in degrees)?
  2. 2.What is the supplement of 29° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 114°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.What is the supplement of 160° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 22°. What is the angle vertically opposite to it (in degrees)?
  6. 6.What is the complement of 42° (in degrees)?
  7. 7.Are 25° and 65° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  8. 8.Are 45° and 45° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  9. 9.Two angles are supplementary. One is 78° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 78°. What is its corresponding angle (in degrees)?
  11. 11.What is the complement of 35° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 117°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the supplement of 76° (in degrees)?
  15. 15.What is the complement of 13° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 43°. What is its corresponding angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 119°. What is the angle vertically opposite to it (in degrees)?
  18. 18.What is the complement of 18° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 68°. What is its alternate interior angle (in degrees)?
  20. 20.What is the complement of 45° (in degrees)?
  21. 21.What is the supplement of 35° (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 101°. What is its other interior angle on the same side of the transversal (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Are 18° and 72° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  25. 25.What is the supplement of 124° (in degrees)?
  26. 26.What is the complement of 9° (in degrees)?
  27. 27.What is the supplement of 140° (in degrees)?
  28. 28.What is the supplement of 125° (in degrees)?
  29. 29.Are 76° and 12° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  30. 30.Two parallel lines are cut by a transversal. One angle is 109°. What is its corresponding angle (in degrees)?
  31. 31.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the complement of 5° (in degrees)?
  33. 33.What is the complement of 62° (in degrees)?
  34. 34.Are 74° and 16° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.What is the supplement of 86° (in degrees)?
  36. 36.What is the complement of 19° (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 129°. What is its other interior angle on the same side of the transversal (in degrees)?
  38. 38.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  39. 39.Are 20° and 133° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  40. 40.Two parallel lines are cut by a transversal. One angle is 44°. What is its corresponding angle (in degrees)?

Answer key

  1. 56
  2. 151
  3. 66
  4. 20
  5. 22
  6. 48
  7. Complementary
  8. Complementary
  9. 129
  10. 78
  11. 55
  12. 63
  13. 75
  14. 104
  15. 77
  16. 43
  17. 119
  18. 72
  19. 68
  20. 45
  21. 145
  22. 79
  23. 32
  24. Complementary
  25. 56
  26. 81
  27. 40
  28. 55
  29. Neither
  30. 109
  31. 49
  32. 85
  33. 28
  34. Complementary
  35. 94
  36. 71
  37. 51
  38. 62
  39. Neither
  40. 44

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