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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 258 · 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.Are 20° and 158° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.Two straight lines cross each other. One of the angles formed is 108°. What is the angle next to it on the same line (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 159°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One angle is 64°. What is its corresponding angle (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 37°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 40°. What is its corresponding angle (in degrees)?
  7. 7.What is the complement of 28° (in degrees)?
  8. 8.Are 19° and 161° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  9. 9.Two parallel lines are cut by a transversal. One angle is 109°. What is its corresponding angle (in degrees)?
  10. 10.What is the supplement of 129° (in degrees)?
  11. 11.What is the complement of 74° (in degrees)?
  12. 12.Are 33° and 147° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.What is the supplement of 34° (in degrees)?
  14. 14.Are 51° and 74° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  15. 15.What is the supplement of 119° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.What is the supplement of 106° (in degrees)?
  18. 18.What is the complement of 6° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 145°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 92°. What is its corresponding angle (in degrees)?
  22. 22.What is the complement of 25° (in degrees)?
  23. 23.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 20°. What is the angle next to it on the same line (in degrees)?
  25. 25.Are 75° and 105° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 102°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 104°. What is its alternate interior angle (in degrees)?
  28. 28.What is the complement of 5° (in degrees)?
  29. 29.What is the supplement of 72° (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One angle is 112°. What is its corresponding angle (in degrees)?
  31. 31.What is the supplement of 39° (in degrees)?
  32. 32.What is the complement of 70° (in degrees)?
  33. 33.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 60°. What is its corresponding angle (in degrees)?
  35. 35.What is the supplement of 131° (in degrees)?
  36. 36.What is the supplement of 30° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 42°. What is the angle vertically opposite to it (in degrees)?
  38. 38.What is the supplement of 75° (in degrees)?
  39. 39.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the supplement of 19° (in degrees)?

Answer key

  1. Neither
  2. 72
  3. 159
  4. 64
  5. 37
  6. 40
  7. 62
  8. Supplementary
  9. 109
  10. 51
  11. 16
  12. Supplementary
  13. 146
  14. Neither
  15. 61
  16. 108
  17. 74
  18. 84
  19. 145
  20. 71
  21. 92
  22. 65
  23. 76
  24. 160
  25. Supplementary
  26. 78
  27. 104
  28. 85
  29. 108
  30. 112
  31. 141
  32. 20
  33. 63
  34. 60
  35. 49
  36. 150
  37. 42
  38. 105
  39. 98
  40. 161

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