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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 554 · 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 71° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 134°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the complement of 44° (in degrees)?
  4. 4.What is the supplement of 160° (in degrees)?
  5. 5.What is the supplement of 33° (in degrees)?
  6. 6.What is the complement of 53° (in degrees)?
  7. 7.What is the complement of 70° (in degrees)?
  8. 8.What is the supplement of 141° (in degrees)?
  9. 9.What is the supplement of 145° (in degrees)?
  10. 10.What is the complement of 45° (in degrees)?
  11. 11.What is the complement of 57° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 57°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 96°. What is its corresponding angle (in degrees)?
  14. 14.What is the supplement of 73° (in degrees)?
  15. 15.What is the supplement of 166° (in degrees)?
  16. 16.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 34°. What is its corresponding angle (in degrees)?
  18. 18.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 159°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the complement of 34° (in degrees)?
  22. 22.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)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 53°. What is its corresponding angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 130°. What is the angle next to it on the same line (in degrees)?
  25. 25.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the complement of 75° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 135°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the supplement of 15° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 45°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 66°. What is the angle vertically opposite to it (in degrees)?
  32. 32.What is the complement of 82° (in degrees)?
  33. 33.What is the supplement of 6° (in degrees)?
  34. 34.What is the supplement of 32° (in degrees)?
  35. 35.What is the supplement of 106° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 82°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.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)?
  38. 38.What is the complement of 19° (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 81°. What is the angle vertically opposite to it (in degrees)?
  40. 40.What is the supplement of 59° (in degrees)?

Answer key

  1. 19
  2. 134
  3. 46
  4. 20
  5. 147
  6. 37
  7. 20
  8. 39
  9. 35
  10. 45
  11. 33
  12. 123
  13. 96
  14. 107
  15. 14
  16. 68
  17. 34
  18. 48
  19. 159
  20. 103
  21. 56
  22. 102
  23. 53
  24. 50
  25. 99
  26. 15
  27. 124
  28. 135
  29. 165
  30. 45
  31. 66
  32. 8
  33. 174
  34. 148
  35. 74
  36. 98
  37. 148
  38. 71
  39. 81
  40. 121

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