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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 539 · 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 126° (in degrees)?
  2. 2.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the supplement of 69° (in degrees)?
  6. 6.Are 17° and 73° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  7. 7.What is the supplement of 76° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 35°. What is the angle next to it on the same line (in degrees)?
  9. 9.Two angles are supplementary. One is 124° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the complement of 50° (in degrees)?
  11. 11.Are 33° and 57° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  12. 12.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
  13. 13.What is the complement of 46° (in degrees)?
  14. 14.What is the supplement of 52° (in degrees)?
  15. 15.Are 75° and 105° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  16. 16.Two parallel lines are cut by a transversal. One angle is 69°. What is its corresponding angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 48°. What is the angle next to it on the same line (in degrees)?
  18. 18.Are 12° and 168° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  19. 19.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  20. 20.What is the supplement of 107° (in degrees)?
  21. 21.What is the supplement of 129° (in degrees)?
  22. 22.What is the supplement of 115° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 74°. What is the angle vertically opposite to it (in degrees)?
  24. 24.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)?
  25. 25.What is the supplement of 169° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 68°. What is its corresponding angle (in degrees)?
  27. 27.What is the supplement of 48° (in degrees)?
  28. 28.Two angles are supplementary. One is 72° more than the other. What is the bigger angle (in degrees)?
  29. 29.Are 36° and 144° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 30°. What is its corresponding angle (in degrees)?
  32. 32.What is the supplement of 153° (in degrees)?
  33. 33.What is the complement of 78° (in degrees)?
  34. 34.What is the complement of 9° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 159°. What is the angle vertically opposite to it (in degrees)?
  36. 36.What is the complement of 21° (in degrees)?
  37. 37.What is the complement of 60° (in degrees)?
  38. 38.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two angles are complementary. One is 52° 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 138°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 54
  2. 112
  3. 124
  4. 46
  5. 111
  6. Complementary
  7. 104
  8. 145
  9. 152
  10. 40
  11. Complementary
  12. 21
  13. 44
  14. 128
  15. Supplementary
  16. 69
  17. 132
  18. Supplementary
  19. 118
  20. 73
  21. 51
  22. 65
  23. 74
  24. 112
  25. 11
  26. 68
  27. 132
  28. 126
  29. Supplementary
  30. 43
  31. 30
  32. 27
  33. 12
  34. 81
  35. 159
  36. 69
  37. 30
  38. 80
  39. 71
  40. 138

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