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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 639 · 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 77° and 13° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  2. 2.What is the complement of 7° (in degrees)?
  3. 3.Two angles are supplementary. One is 104° more than the other. What is the bigger angle (in degrees)?
  4. 4.Are 23° and 157° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.What is the supplement of 65° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 93°. What is the angle next to it on the same line (in degrees)?
  7. 7.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One angle is 143°. What is its corresponding angle (in degrees)?
  9. 9.What is the supplement of 29° (in degrees)?
  10. 10.What is the complement of 48° (in degrees)?
  11. 11.Are 76° and 14° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  12. 12.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the complement of 19° (in degrees)?
  14. 14.What is the complement of 8° (in degrees)?
  15. 15.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)?
  16. 16.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 49°. What is its other interior angle on the same side of the transversal (in degrees)?
  19. 19.What is the supplement of 11° (in degrees)?
  20. 20.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)?
  21. 21.Two straight lines cross each other. One of the angles formed is 78°. What is the angle next to it on the same line (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 58°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 116°. What is its corresponding angle (in degrees)?
  24. 24.What is the supplement of 78° (in degrees)?
  25. 25.What is the supplement of 41° (in degrees)?
  26. 26.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)?
  27. 27.Are 16° and 69° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the complement of 82° (in degrees)?
  30. 30.What is the complement of 69° (in degrees)?
  31. 31.What is the supplement of 7° (in degrees)?
  32. 32.What is the complement of 18° (in degrees)?
  33. 33.What is the complement of 46° (in degrees)?
  34. 34.What is the supplement of 149° (in degrees)?
  35. 35.Are 25° and 147° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  36. 36.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 26° and 48° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.Two straight lines cross each other. One of the angles formed is 38°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 154°. What is the angle next to it on the same line (in degrees)?
  40. 40.What is the supplement of 122° (in degrees)?

Answer key

  1. Complementary
  2. 83
  3. 142
  4. Supplementary
  5. 115
  6. 87
  7. 154
  8. 143
  9. 151
  10. 42
  11. Complementary
  12. 56
  13. 71
  14. 82
  15. 101
  16. 152
  17. 49
  18. 131
  19. 169
  20. 108
  21. 102
  22. 122
  23. 116
  24. 102
  25. 139
  26. 154
  27. Neither
  28. 96
  29. 8
  30. 21
  31. 173
  32. 72
  33. 44
  34. 31
  35. Neither
  36. 55
  37. Neither
  38. 38
  39. 26
  40. 58

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