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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 193 · 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 66° (in degrees)?
  2. 2.Are 58° and 122° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  3. 3.Two straight lines cross each other. One of the angles formed is 25°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 66°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the complement of 83° (in degrees)?
  7. 7.What is the supplement of 75° (in degrees)?
  8. 8.What is the supplement of 52° (in degrees)?
  9. 9.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 96°. What is its other interior angle on the same side of the transversal (in degrees)?
  11. 11.What is the supplement of 112° (in degrees)?
  12. 12.Are 27° and 153° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  13. 13.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 97°. What is the angle next to it on the same line (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
  16. 16.What is the supplement of 35° (in degrees)?
  17. 17.Are 43° and 164° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  18. 18.Two straight lines cross each other. One of the angles formed is 91°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its alternate interior angle (in degrees)?
  20. 20.What is the complement of 76° (in degrees)?
  21. 21.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  22. 22.Are 76° and 14° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  23. 23.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the complement of 15° (in degrees)?
  25. 25.What is the complement of 20° (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 41°. What is the angle next to it on the same line (in degrees)?
  27. 27.Are 34° and 146° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  28. 28.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)?
  29. 29.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  30. 30.Are 27° and 63° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.What is the supplement of 162° (in degrees)?
  32. 32.Are 24° and 66° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  33. 33.What is the supplement of 7° (in degrees)?
  34. 34.What is the complement of 47° (in degrees)?
  35. 35.Are 47° and 133° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  36. 36.What is the complement of 72° (in degrees)?
  37. 37.What is the complement of 77° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 23°. What is the angle next to it on the same line (in degrees)?
  39. 39.What is the complement of 16° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 101°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 24
  2. Supplementary
  3. 25
  4. 114
  5. 56
  6. 7
  7. 105
  8. 128
  9. 65
  10. 84
  11. 68
  12. Supplementary
  13. 70
  14. 83
  15. 95
  16. 145
  17. Neither
  18. 91
  19. 32
  20. 14
  21. 62
  22. Complementary
  23. 61
  24. 75
  25. 70
  26. 139
  27. Supplementary
  28. 130
  29. 160
  30. Complementary
  31. 18
  32. Complementary
  33. 173
  34. 43
  35. Supplementary
  36. 18
  37. 13
  38. 157
  39. 74
  40. 79

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