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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 941 · 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 98°. What is the angle next to it on the same line (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 42°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the supplement of 87° (in degrees)?
  5. 5.What is the complement of 32° (in degrees)?
  6. 6.What is the complement of 64° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 74°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 73°. What is its alternate interior angle (in degrees)?
  9. 9.What is the supplement of 59° (in degrees)?
  10. 10.Are 25° and 65° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  11. 11.Are 32° and 138° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.Two parallel lines are cut by a transversal. One angle is 31°. What is its corresponding angle (in degrees)?
  13. 13.What is the complement of 25° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 89°. What is its corresponding angle (in degrees)?
  15. 15.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  16. 16.Are 16° and 74° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  17. 17.Are 19° and 71° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 113°. What is its alternate interior angle (in degrees)?
  19. 19.What is the complement of 38° (in degrees)?
  20. 20.What is the supplement of 162° (in degrees)?
  21. 21.Are 45° and 135° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  22. 22.Two parallel lines are cut by a transversal. One angle is 38°. What is its corresponding angle (in degrees)?
  23. 23.What is the supplement of 37° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 28°. What is the angle next to it on the same line (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 131°. What is the angle next to it on the same line (in degrees)?
  26. 26.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the supplement of 13° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the supplement of 66° (in degrees)?
  30. 30.Two angles are supplementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  33. 33.What is the supplement of 58° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 27°. What is the angle next to it on the same line (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 108°. What is the angle next to it on the same line (in degrees)?
  37. 37.What is the supplement of 14° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 48°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the complement of 33° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 33°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 82
  2. 42
  3. 54
  4. 93
  5. 58
  6. 26
  7. 74
  8. 73
  9. 121
  10. Complementary
  11. Neither
  12. 31
  13. 65
  14. 89
  15. 91
  16. Complementary
  17. Complementary
  18. 113
  19. 52
  20. 18
  21. Supplementary
  22. 38
  23. 143
  24. 152
  25. 49
  26. 49
  27. 167
  28. 32
  29. 114
  30. 100
  31. 75
  32. 141
  33. 122
  34. 153
  35. 27
  36. 72
  37. 166
  38. 48
  39. 57
  40. 33

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