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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 170 · 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.Two straight lines cross each other. One of the angles formed is 64°. What is the angle vertically opposite to it (in degrees)?
  2. 2.What is the supplement of 118° (in degrees)?
  3. 3.Are 61° and 27° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  4. 4.What is the complement of 23° (in degrees)?
  5. 5.Are 61° and 119° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  6. 6.What is the supplement of 15° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 33°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 79°. What is the angle vertically opposite to it (in degrees)?
  10. 10.Are 78° and 12° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its alternate interior angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 116°. What is the angle vertically opposite to it (in degrees)?
  13. 13.What is the complement of 22° (in degrees)?
  14. 14.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the complement of 29° (in degrees)?
  16. 16.What is the supplement of 129° (in degrees)?
  17. 17.What is the supplement of 12° (in degrees)?
  18. 18.Are 78° and 102° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  19. 19.What is the complement of 66° (in degrees)?
  20. 20.Are 49° and 131° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.What is the supplement of 103° (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 49°. What is its corresponding angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 46°. What is its corresponding angle (in degrees)?
  24. 24.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 20° (in degrees)?
  27. 27.Are 11° and 106° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  28. 28.Two straight lines cross each other. One of the angles formed is 153°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the complement of 17° (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 138°. What is its alternate interior angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 150°. What is the angle next to it on the same line (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 147°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the supplement of 36° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 54°. What is the angle next to it on the same line (in degrees)?
  35. 35.Are 50° and 121° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  36. 36.What is the supplement of 123° (in degrees)?
  37. 37.What is the supplement of 143° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 109°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 118°. What is its alternate interior 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. 64
  2. 62
  3. Neither
  4. 67
  5. Supplementary
  6. 165
  7. 33
  8. 133
  9. 79
  10. Complementary
  11. 60
  12. 116
  13. 68
  14. 57
  15. 61
  16. 51
  17. 168
  18. Supplementary
  19. 24
  20. Supplementary
  21. 77
  22. 49
  23. 46
  24. 91
  25. 103
  26. 160
  27. Neither
  28. 153
  29. 73
  30. 138
  31. 30
  32. 33
  33. 144
  34. 126
  35. Neither
  36. 57
  37. 37
  38. 71
  39. 118
  40. 43

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