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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 556 · 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 parallel lines are cut by a transversal. One angle is 141°. What is its corresponding angle (in degrees)?
  2. 2.What is the complement of 68° (in degrees)?
  3. 3.What is the supplement of 13° (in degrees)?
  4. 4.Are 80° and 10° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.Two straight lines cross each other. One of the angles formed is 33°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Are 69° and 21° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  7. 7.Two straight lines cross each other. One of the angles formed is 116°. What is the angle next to it on the same line (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 43°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the complement of 56° (in degrees)?
  10. 10.What is the complement of 59° (in degrees)?
  11. 11.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 33°. What is its corresponding angle (in degrees)?
  13. 13.Are 12° and 78° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 112°. What is its other interior angle on the same side of the transversal (in degrees)?
  16. 16.What is the complement of 30° (in degrees)?
  17. 17.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 120°. What is the angle next to it on the same line (in degrees)?
  20. 20.Two angles are supplementary. One is 118° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  23. 23.Are 40° and 140° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Two parallel lines are cut by a transversal. One angle is 35°. What is its corresponding angle (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 159°. What is the angle next to it on the same line (in degrees)?
  26. 26.What is the complement of 12° (in degrees)?
  27. 27.What is the complement of 54° (in degrees)?
  28. 28.What is the supplement of 126° (in degrees)?
  29. 29.What is the supplement of 5° (in degrees)?
  30. 30.What is the complement of 70° (in degrees)?
  31. 31.What is the supplement of 28° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 94°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.What is the supplement of 22° (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 79°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.What is the complement of 9° (in degrees)?
  36. 36.What is the complement of 42° (in degrees)?
  37. 37.Are 43° and 137° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  38. 38.Two straight lines cross each other. One of the angles formed is 157°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the supplement of 10° (in degrees)?
  40. 40.Are 48° and 60° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

Answer key

  1. 141
  2. 22
  3. 167
  4. Complementary
  5. 33
  6. Complementary
  7. 64
  8. 43
  9. 34
  10. 31
  11. 54
  12. 33
  13. Complementary
  14. 79
  15. 68
  16. 60
  17. 159
  18. 21
  19. 60
  20. 149
  21. 108
  22. 97
  23. Supplementary
  24. 35
  25. 21
  26. 78
  27. 36
  28. 54
  29. 175
  30. 20
  31. 152
  32. 86
  33. 158
  34. 101
  35. 81
  36. 48
  37. Supplementary
  38. 157
  39. 170
  40. Neither

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