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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 594 · 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 154° (in degrees)?
  2. 2.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  3. 3.Are 49° and 41° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  4. 4.What is the complement of 30° (in degrees)?
  5. 5.What is the complement of 5° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 147°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.What is the supplement of 96° (in degrees)?
  8. 8.Are 45° and 93° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.Two straight lines cross each other. One of the angles formed is 143°. What is the angle vertically opposite to it (in degrees)?
  10. 10.What is the complement of 40° (in degrees)?
  11. 11.What is the supplement of 54° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 36°. What is its corresponding angle (in degrees)?
  13. 13.What is the complement of 66° (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 76°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Are 47° and 43° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  16. 16.What is the supplement of 116° (in degrees)?
  17. 17.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  18. 18.Are 18° and 163° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  19. 19.What is the supplement of 43° (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 61°. What is its alternate interior angle (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 95°. What is the angle next to it on the same line (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 68°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 74°. What is the angle next to it on the same line (in degrees)?
  24. 24.What is the supplement of 17° (in degrees)?
  25. 25.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the complement of 56° (in degrees)?
  27. 27.Are 24° and 97° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  28. 28.What is the complement of 34° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its other interior angle on the same side of the transversal (in degrees)?
  30. 30.What is the complement of 14° (in degrees)?
  31. 31.Are 18° and 72° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.What is the supplement of 166° (in degrees)?
  33. 33.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 80°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Are 55° and 161° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.Are 26° and 64° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 86°. What is its other interior angle on the same side of the transversal (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 40°. What is the angle next to it on the same line (in degrees)?
  39. 39.Are 15° and 75° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  40. 40.What is the complement of 78° (in degrees)?

Answer key

  1. 26
  2. 48
  3. Complementary
  4. 60
  5. 85
  6. 33
  7. 84
  8. Neither
  9. 143
  10. 50
  11. 126
  12. 36
  13. 24
  14. 76
  15. Complementary
  16. 64
  17. 112
  18. Neither
  19. 137
  20. 61
  21. 85
  22. 112
  23. 106
  24. 163
  25. 54
  26. 34
  27. Neither
  28. 56
  29. 121
  30. 76
  31. Complementary
  32. 14
  33. 78
  34. 80
  35. Neither
  36. Complementary
  37. 94
  38. 140
  39. Complementary
  40. 12

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