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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 673 · 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.Are 42° and 101° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  2. 2.What is the complement of 49° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 35°. What is its alternate interior angle (in degrees)?
  4. 4.What is the supplement of 109° (in degrees)?
  5. 5.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 35°. What is the angle vertically opposite to it (in degrees)?
  7. 7.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?
  9. 9.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 150°. What is its alternate interior angle (in degrees)?
  11. 11.What is the supplement of 95° (in degrees)?
  12. 12.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  14. 14.What is the supplement of 47° (in degrees)?
  15. 15.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the supplement of 16° (in degrees)?
  17. 17.Are 53° and 37° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  18. 18.What is the supplement of 99° (in degrees)?
  19. 19.What is the supplement of 171° (in degrees)?
  20. 20.What is the supplement of 144° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 51°. What is the angle next to it on the same line (in degrees)?
  22. 22.Are 42° and 39° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  23. 23.What is the supplement of 59° (in degrees)?
  24. 24.Two angles are supplementary. One is 76° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 114° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 135°. What is its corresponding angle (in degrees)?
  27. 27.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  28. 28.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)?
  29. 29.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
  30. 30.What is the complement of 47° (in degrees)?
  31. 31.What is the complement of 41° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 62°. What is its alternate interior angle (in degrees)?
  33. 33.What is the supplement of 75° (in degrees)?
  34. 34.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?
  35. 35.Are 38° and 52° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 29° and 42° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.What is the complement of 77° (in degrees)?
  39. 39.What is the supplement of 46° (in degrees)?
  40. 40.Are 13° and 21° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. Neither
  2. 41
  3. 35
  4. 71
  5. 124
  6. 35
  7. 59
  8. 43
  9. 53
  10. 150
  11. 85
  12. 130
  13. 24
  14. 133
  15. 79
  16. 164
  17. Complementary
  18. 81
  19. 9
  20. 36
  21. 129
  22. Neither
  23. 121
  24. 128
  25. 66
  26. 135
  27. 62
  28. 79
  29. 21
  30. 43
  31. 49
  32. 62
  33. 105
  34. 136
  35. Complementary
  36. 46
  37. Neither
  38. 13
  39. 134
  40. Neither

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