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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 609 · 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 84° (in degrees)?
  2. 2.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  3. 3.What is the complement of 47° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One angle is 46°. What is its corresponding angle (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 39°. What is the angle next to it on the same line (in degrees)?
  6. 6.Are 29° and 151° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Two straight lines cross each other. One of the angles formed is 62°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the supplement of 13° (in degrees)?
  9. 9.What is the supplement of 50° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 138°. What is its corresponding angle (in degrees)?
  11. 11.What is the supplement of 29° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 42°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are supplementary. One is 110° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 141°. What is the angle next to it on the same line (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 123°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Are 80° and 161° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  18. 18.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  19. 19.What is the supplement of 17° (in degrees)?
  20. 20.What is the supplement of 72° (in degrees)?
  21. 21.Are 66° and 24° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  22. 22.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 66° (in degrees)?
  24. 24.What is the complement of 52° (in degrees)?
  25. 25.Are 49° and 38° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  26. 26.Are 58° and 32° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  27. 27.Two angles are supplementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two angles are supplementary. One is 134° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the complement of 45° (in degrees)?
  31. 31.Are 45° and 45° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  32. 32.What is the supplement of 85° (in degrees)?
  33. 33.What is the supplement of 128° (in degrees)?
  34. 34.What is the complement of 54° (in degrees)?
  35. 35.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  36. 36.Are 49° and 81° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  37. 37.What is the complement of 30° (in degrees)?
  38. 38.What is the supplement of 174° (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 93°. What is its alternate interior angle (in degrees)?
  40. 40.What is the supplement of 74° (in degrees)?

Answer key

  1. 6
  2. 80
  3. 43
  4. 46
  5. 141
  6. Supplementary
  7. 62
  8. 167
  9. 130
  10. 138
  11. 151
  12. 138
  13. 104
  14. 145
  15. 39
  16. 123
  17. Neither
  18. 105
  19. 163
  20. 108
  21. Complementary
  22. 53
  23. 24
  24. 38
  25. Neither
  26. Complementary
  27. 100
  28. 69
  29. 157
  30. 45
  31. Complementary
  32. 95
  33. 52
  34. 36
  35. 46
  36. Neither
  37. 60
  38. 6
  39. 93
  40. 106

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