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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 930 · 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 114° (in degrees)?
  2. 2.What is the supplement of 116° (in degrees)?
  3. 3.What is the supplement of 102° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 136°. What is the angle vertically opposite to it (in degrees)?
  5. 5.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)?
  6. 6.What is the supplement of 135° (in degrees)?
  7. 7.What is the complement of 5° (in degrees)?
  8. 8.Are 16° and 117° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  9. 9.What is the supplement of 170° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 90°. What is its alternate interior angle (in degrees)?
  11. 11.What is the supplement of 59° (in degrees)?
  12. 12.What is the supplement of 52° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 99°. What is the angle next to it on the same line (in degrees)?
  14. 14.Are 25° and 48° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  15. 15.What is the supplement of 109° (in degrees)?
  16. 16.What is the supplement of 32° (in degrees)?
  17. 17.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  18. 18.Are 53° and 127° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  19. 19.Are 42° and 48° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 125°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 133°. 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 24°. What is the angle next to it on the same line (in degrees)?
  24. 24.What is the complement of 27° (in degrees)?
  25. 25.What is the supplement of 120° (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 65°. What is the angle next to it on the same line (in degrees)?
  27. 27.What is the supplement of 39° (in degrees)?
  28. 28.What is the supplement of 82° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 116°. What is its corresponding angle (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 35°. What is the angle vertically opposite to it (in degrees)?
  31. 31.What is the supplement of 118° (in degrees)?
  32. 32.Are 75° and 105° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  33. 33.Are 64° and 71° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  34. 34.What is the complement of 17° (in degrees)?
  35. 35.What is the supplement of 51° (in degrees)?
  36. 36.Are 48° and 90° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  37. 37.Are 66° and 24° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  38. 38.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two angles are supplementary. One is 124° 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 43°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 66
  2. 64
  3. 78
  4. 136
  5. 39
  6. 45
  7. 85
  8. Neither
  9. 10
  10. 90
  11. 121
  12. 128
  13. 81
  14. Neither
  15. 71
  16. 148
  17. 54
  18. Supplementary
  19. Complementary
  20. 98
  21. 125
  22. 47
  23. 156
  24. 63
  25. 60
  26. 115
  27. 141
  28. 98
  29. 116
  30. 35
  31. 62
  32. Supplementary
  33. Neither
  34. 73
  35. 129
  36. Neither
  37. Complementary
  38. 91
  39. 152
  40. 43

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