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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 612 · 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 angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  2. 2.What is the supplement of 138° (in degrees)?
  3. 3.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  4. 4.Are 64° and 26° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 120°. What is its alternate interior angle (in degrees)?
  6. 6.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 52°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the supplement of 19° (in degrees)?
  10. 10.Are 11° and 79° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  11. 11.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 24°. What is the angle next to it on the same line (in degrees)?
  13. 13.What is the supplement of 64° (in degrees)?
  14. 14.What is the supplement of 101° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 134°. What is the angle next to it on the same line (in degrees)?
  16. 16.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  17. 17.Are 65° and 25° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  18. 18.What is the complement of 26° (in degrees)?
  19. 19.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the complement of 27° (in degrees)?
  22. 22.What is the complement of 34° (in degrees)?
  23. 23.Are 25° and 112° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  24. 24.What is the complement of 9° (in degrees)?
  25. 25.Two angles are supplementary. One is 100° more than the other. What is the bigger angle (in degrees)?
  26. 26.Are 32° and 58° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  27. 27.What is the complement of 38° (in degrees)?
  28. 28.What is the supplement of 18° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 31°. What is the angle next to it on the same line (in degrees)?
  30. 30.Are 11° and 169° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.Are 73° and 107° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  32. 32.What is the supplement of 91° (in degrees)?
  33. 33.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 87°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the complement of 54° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 88°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two angles are supplementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the complement of 62° (in degrees)?
  40. 40.What is the complement of 40° (in degrees)?

Answer key

  1. 96
  2. 42
  3. 103
  4. Complementary
  5. 120
  6. 98
  7. 110
  8. 52
  9. 161
  10. Complementary
  11. 51
  12. 156
  13. 116
  14. 79
  15. 46
  16. 63
  17. Complementary
  18. 64
  19. 74
  20. 52
  21. 63
  22. 56
  23. Neither
  24. 81
  25. 140
  26. Complementary
  27. 52
  28. 162
  29. 149
  30. Supplementary
  31. Supplementary
  32. 89
  33. 50
  34. 87
  35. 36
  36. 92
  37. 55
  38. 106
  39. 28
  40. 50

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