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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 631 · 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 132°. What is the angle next to it on the same line (in degrees)?
  2. 2.Are 65° and 25° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  3. 3.What is the complement of 65° (in degrees)?
  4. 4.What is the supplement of 46° (in degrees)?
  5. 5.What is the complement of 17° (in degrees)?
  6. 6.What is the complement of 32° (in degrees)?
  7. 7.Are 26° and 64° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.What is the supplement of 164° (in degrees)?
  9. 9.Are 13° and 77° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  10. 10.Two straight lines cross each other. One of the angles formed is 100°. What is the angle vertically opposite to it (in degrees)?
  11. 11.What is the supplement of 144° (in degrees)?
  12. 12.Are 13° and 161° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 36°. What is its corresponding angle (in degrees)?
  15. 15.What is the complement of 25° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 53°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the complement of 62° (in degrees)?
  18. 18.Are 15° and 165° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  19. 19.Two straight lines cross each other. One of the angles formed is 121°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the complement of 11° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  23. 23.Are 80° and 100° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 110°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.What is the supplement of 154° (in degrees)?
  26. 26.What is the complement of 21° (in degrees)?
  27. 27.What is the supplement of 106° (in degrees)?
  28. 28.What is the supplement of 52° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 49°. What is the angle next to it on the same line (in degrees)?
  30. 30.Are 20° and 40° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  31. 31.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two angles are supplementary. One is 72° more than the other. What is the bigger angle (in degrees)?
  33. 33.Are 33° and 57° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.Two angles are supplementary. One is 76° more than the other. What is the bigger angle (in degrees)?
  35. 35.Are 16° and 164° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.What is the complement of 69° (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 58°. What is its corresponding angle (in degrees)?
  38. 38.What is the supplement of 22° (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 121°. What is its alternate interior angle (in degrees)?
  40. 40.Are 26° and 154° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

Answer key

  1. 48
  2. Complementary
  3. 25
  4. 134
  5. 73
  6. 58
  7. Complementary
  8. 16
  9. Complementary
  10. 100
  11. 36
  12. Neither
  13. 64
  14. 36
  15. 65
  16. 53
  17. 28
  18. Supplementary
  19. 121
  20. 132
  21. 79
  22. 128
  23. Supplementary
  24. 70
  25. 26
  26. 69
  27. 74
  28. 128
  29. 131
  30. Neither
  31. 98
  32. 126
  33. Complementary
  34. 128
  35. Supplementary
  36. 21
  37. 58
  38. 158
  39. 121
  40. Supplementary

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