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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 468 · 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 19° and 71° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  2. 2.Two straight lines cross each other. One of the angles formed is 52°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Are 47° and 150° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  4. 4.Are 77° and 64° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  5. 5.Two straight lines cross each other. One of the angles formed is 97°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its alternate interior angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 61°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the complement of 74° (in degrees)?
  9. 9.Are 43° and 47° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  10. 10.What is the complement of 54° (in degrees)?
  11. 11.What is the complement of 23° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 72°. What is its corresponding angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 41°. What is its corresponding angle (in degrees)?
  15. 15.What is the complement of 16° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 113°. What is its corresponding angle (in degrees)?
  17. 17.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the supplement of 100° (in degrees)?
  19. 19.Are 43° and 94° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.Are 80° and 116° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 26°. What is the angle next to it on the same line (in degrees)?
  23. 23.What is the complement of 78° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 133°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 138°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the supplement of 6° (in degrees)?
  27. 27.Are 12° and 101° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  28. 28.Two parallel lines are cut by a transversal. One angle is 73°. What is its corresponding angle (in degrees)?
  29. 29.Are 66° and 24° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its alternate interior angle (in degrees)?
  31. 31.What is the complement of 40° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 94°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Are 17° and 163° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 57° (in degrees)?
  36. 36.Are 71° and 19° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  37. 37.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Are 68° and 113° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  39. 39.Are 23° and 157° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 138°. What is its other interior angle on the same side of the transversal (in degrees)?

Answer key

  1. Complementary
  2. 52
  3. Neither
  4. Neither
  5. 97
  6. 30
  7. 61
  8. 16
  9. Complementary
  10. 36
  11. 67
  12. 29
  13. 72
  14. 41
  15. 74
  16. 113
  17. 134
  18. 80
  19. Neither
  20. Neither
  21. 155
  22. 154
  23. 12
  24. 133
  25. 138
  26. 174
  27. Neither
  28. 73
  29. Complementary
  30. 72
  31. 50
  32. 94
  33. Supplementary
  34. 70
  35. 33
  36. Complementary
  37. 49
  38. Neither
  39. Supplementary
  40. 42

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