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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 267 · 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 parallel lines are cut by a transversal. One interior angle is 103°. What is its alternate interior angle (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 87°. What is its corresponding angle (in degrees)?
  3. 3.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)?
  4. 4.What is the complement of 65° (in degrees)?
  5. 5.What is the supplement of 17° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
  7. 7.Two angles are supplementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  8. 8.What is the supplement of 149° (in degrees)?
  9. 9.Are 24° and 156° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  10. 10.What is the supplement of 48° (in degrees)?
  11. 11.Are 48° and 43° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the supplement of 67° (in degrees)?
  14. 14.What is the complement of 11° (in degrees)?
  15. 15.What is the supplement of 24° (in degrees)?
  16. 16.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 107°. What is the angle next to it on the same line (in degrees)?
  18. 18.Are 76° and 34° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  19. 19.What is the complement of 61° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 115°. What is the angle next to it on the same line (in degrees)?
  21. 21.What is the complement of 40° (in degrees)?
  22. 22.What is the complement of 10° (in degrees)?
  23. 23.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the complement of 13° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 124°. What is its alternate interior angle (in degrees)?
  26. 26.Are 23° and 67° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 78°. What is its other interior angle on the same side of the transversal (in degrees)?
  28. 28.What is the complement of 58° (in degrees)?
  29. 29.What is the complement of 47° (in degrees)?
  30. 30.What is the supplement of 26° (in degrees)?
  31. 31.What is the supplement of 175° (in degrees)?
  32. 32.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  34. 34.Are 29° and 151° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  35. 35.Are 16° and 164° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.What is the supplement of 122° (in degrees)?
  37. 37.What is the complement of 75° (in degrees)?
  38. 38.What is the supplement of 106° (in degrees)?
  39. 39.What is the supplement of 140° (in degrees)?
  40. 40.Are 76° and 14° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

Answer key

  1. 103
  2. 87
  3. 51
  4. 25
  5. 163
  6. 21
  7. 95
  8. 31
  9. Supplementary
  10. 132
  11. Neither
  12. 93
  13. 113
  14. 79
  15. 156
  16. 153
  17. 73
  18. Neither
  19. 29
  20. 65
  21. 50
  22. 80
  23. 105
  24. 77
  25. 124
  26. Complementary
  27. 102
  28. 32
  29. 43
  30. 154
  31. 5
  32. 76
  33. 57
  34. Supplementary
  35. Supplementary
  36. 58
  37. 15
  38. 74
  39. 40
  40. Complementary

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