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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 330 · 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 straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
  2. 2.Are 33° and 57° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  3. 3.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the complement of 47° (in degrees)?
  5. 5.What is the complement of 24° (in degrees)?
  6. 6.What is the complement of 22° (in degrees)?
  7. 7.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  8. 8.What is the supplement of 56° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 99°. What is the angle next to it on the same line (in degrees)?
  10. 10.What is the supplement of 115° (in degrees)?
  11. 11.What is the complement of 20° (in degrees)?
  12. 12.What is the supplement of 23° (in degrees)?
  13. 13.What is the supplement of 30° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 40°. What is its corresponding angle (in degrees)?
  15. 15.Are 24° and 156° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  16. 16.Two straight lines cross each other. One of the angles formed is 36°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Are 34° and 146° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  18. 18.What is the complement of 60° (in degrees)?
  19. 19.Are 75° and 15° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  20. 20.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 74°. What is its corresponding angle (in degrees)?
  22. 22.What is the supplement of 38° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 42°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Are 77° and 13° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  25. 25.What is the supplement of 69° (in degrees)?
  26. 26.What is the supplement of 54° (in degrees)?
  27. 27.What is the complement of 70° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 32°. What is the angle next to it on the same line (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 75°. What is the angle next to it on the same line (in degrees)?
  30. 30.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 149°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 35°. What is its corresponding angle (in degrees)?
  33. 33.What is the supplement of 114° (in degrees)?
  34. 34.What is the supplement of 66° (in degrees)?
  35. 35.What is the supplement of 13° (in degrees)?
  36. 36.What is the supplement of 16° (in degrees)?
  37. 37.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 109°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
  40. 40.What is the supplement of 72° (in degrees)?

Answer key

  1. 95
  2. Complementary
  3. 67
  4. 43
  5. 66
  6. 68
  7. 56
  8. 124
  9. 81
  10. 65
  11. 70
  12. 157
  13. 150
  14. 40
  15. Supplementary
  16. 36
  17. Supplementary
  18. 30
  19. Complementary
  20. 32
  21. 74
  22. 142
  23. 42
  24. Complementary
  25. 111
  26. 126
  27. 20
  28. 148
  29. 105
  30. 104
  31. 149
  32. 35
  33. 66
  34. 114
  35. 167
  36. 164
  37. 135
  38. 71
  39. 32
  40. 108

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