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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 356 · 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 120° (in degrees)?
  2. 2.What is the supplement of 121° (in degrees)?
  3. 3.What is the complement of 63° (in degrees)?
  4. 4.What is the supplement of 14° (in degrees)?
  5. 5.Are 16° and 69° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  6. 6.Are 47° and 43° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.What is the supplement of 134° (in degrees)?
  8. 8.What is the complement of 85° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 57°. What is the angle next to it on the same line (in degrees)?
  10. 10.Are 59° and 38° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  11. 11.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 93°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the supplement of 40° (in degrees)?
  16. 16.What is the supplement of 73° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  18. 18.What is the supplement of 35° (in degrees)?
  19. 19.What is the complement of 61° (in degrees)?
  20. 20.What is the supplement of 30° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 104°. What is the angle vertically opposite to it (in degrees)?
  22. 22.What is the supplement of 43° (in degrees)?
  23. 23.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the complement of 36° (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 117°. What is the angle vertically opposite to it (in degrees)?
  27. 27.What is the complement of 21° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 61°. What is its alternate interior angle (in degrees)?
  30. 30.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  31. 31.Are 78° and 102° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.Two straight lines cross each other. One of the angles formed is 114°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 103°. What is its corresponding angle (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 40°. What is the angle next to it on the same line (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 86°. What is its alternate interior angle (in degrees)?
  37. 37.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  38. 38.Are 19° and 83° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  39. 39.Two straight lines cross each other. One of the angles formed is 91°. What is the angle vertically opposite to it (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 127°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 60
  2. 59
  3. 27
  4. 166
  5. Neither
  6. Complementary
  7. 46
  8. 5
  9. 123
  10. Neither
  11. 152
  12. 93
  13. 48
  14. 96
  15. 140
  16. 107
  17. 128
  18. 145
  19. 29
  20. 150
  21. 104
  22. 137
  23. 153
  24. 102
  25. 54
  26. 117
  27. 69
  28. 151
  29. 61
  30. 97
  31. Supplementary
  32. 114
  33. 95
  34. 103
  35. 140
  36. 86
  37. 69
  38. Neither
  39. 91
  40. 127

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