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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 130 · 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.Are 25° and 39° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  2. 2.Two straight lines cross each other. One of the angles formed is 34°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the complement of 11° (in degrees)?
  4. 4.Are 58° and 122° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.Two straight lines cross each other. One of the angles formed is 90°. What is the angle next to it on the same line (in degrees)?
  6. 6.What is the supplement of 155° (in degrees)?
  7. 7.Are 24° and 156° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.Two straight lines cross each other. One of the angles formed is 106°. What is the angle next to it on the same line (in degrees)?
  9. 9.Are 43° and 137° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.What is the supplement of 41° (in degrees)?
  11. 11.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 78°. 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 103°. What is its corresponding angle (in degrees)?
  14. 14.What is the supplement of 45° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One angle is 76°. What is its corresponding angle (in degrees)?
  16. 16.Are 63° and 129° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  17. 17.What is the complement of 38° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 39°. What is its alternate interior angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 79°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.What is the complement of 16° (in degrees)?
  21. 21.Are 33° and 147° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.What is the complement of 25° (in degrees)?
  23. 23.Are 24° and 66° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 146°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 136°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.Are 74° and 16° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  28. 28.Two straight lines cross each other. One of the angles formed is 80°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the complement of 59° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 31°. What is the angle next to it on the same line (in degrees)?
  31. 31.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  32. 32.Are 71° and 109° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  33. 33.Two angles are supplementary. One is 82° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 103°. What is its alternate interior angle (in degrees)?
  35. 35.What is the supplement of 162° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 128°. What is the angle vertically opposite to it (in degrees)?
  37. 37.What is the complement of 49° (in degrees)?
  38. 38.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its alternate interior angle (in degrees)?
  40. 40.What is the supplement of 100° (in degrees)?

Answer key

  1. Neither
  2. 34
  3. 79
  4. Supplementary
  5. 90
  6. 25
  7. Supplementary
  8. 74
  9. Supplementary
  10. 139
  11. 60
  12. 102
  13. 103
  14. 135
  15. 76
  16. Neither
  17. 52
  18. 39
  19. 101
  20. 74
  21. Supplementary
  22. 65
  23. Complementary
  24. 34
  25. 55
  26. 44
  27. Complementary
  28. 80
  29. 31
  30. 149
  31. 117
  32. Supplementary
  33. 131
  34. 103
  35. 18
  36. 128
  37. 41
  38. 48
  39. 41
  40. 80

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