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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 426 · 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 supplement of 54° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 143°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the supplement of 47° (in degrees)?
  4. 4.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the complement of 11° (in degrees)?
  7. 7.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)?
  8. 8.Are 23° and 157° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 143°. What is its other interior angle on the same side of the transversal (in degrees)?
  10. 10.What is the complement of 30° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 123°. What is its corresponding angle (in degrees)?
  12. 12.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 125°. What is its corresponding angle (in degrees)?
  15. 15.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  16. 16.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)?
  17. 17.What is the complement of 38° (in degrees)?
  18. 18.What is the complement of 63° (in degrees)?
  19. 19.Are 28° and 62° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  20. 20.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 113°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the supplement of 71° (in degrees)?
  25. 25.What is the supplement of 5° (in degrees)?
  26. 26.What is the complement of 77° (in degrees)?
  27. 27.Are 53° and 37° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  28. 28.What is the supplement of 108° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 63°. What is the angle next to it on the same line (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One angle is 127°. What is its corresponding angle (in degrees)?
  31. 31.Are 31° and 59° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  32. 32.Two straight lines cross each other. One of the angles formed is 117°. What is the angle next to it on the same line (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 69°. What is its corresponding angle (in degrees)?
  34. 34.Are 46° and 89° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  35. 35.Two straight lines cross each other. One of the angles formed is 50°. What is the angle next to it on the same line (in degrees)?
  36. 36.What is the supplement of 132° (in degrees)?
  37. 37.What is the complement of 5° (in degrees)?
  38. 38.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 145°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 126
  2. 143
  3. 133
  4. 56
  5. 66
  6. 79
  7. 39
  8. Supplementary
  9. 37
  10. 60
  11. 123
  12. 74
  13. 60
  14. 125
  15. 70
  16. 141
  17. 52
  18. 27
  19. Complementary
  20. 24
  21. 67
  22. 155
  23. 133
  24. 109
  25. 175
  26. 13
  27. Complementary
  28. 72
  29. 117
  30. 127
  31. Complementary
  32. 63
  33. 69
  34. Neither
  35. 130
  36. 48
  37. 85
  38. 69
  39. 160
  40. 145

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