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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 225 · 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 138° (in degrees)?
  2. 2.What is the complement of 11° (in degrees)?
  3. 3.Are 67° and 41° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  4. 4.What is the complement of 15° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 95°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 131°. What is the angle next to it on the same line (in degrees)?
  7. 7.What is the supplement of 59° (in degrees)?
  8. 8.Two angles are supplementary. One is 94° more than the other. What is the bigger angle (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 51°. What is the angle vertically opposite to it (in degrees)?
  10. 10.What is the supplement of 152° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its alternate interior angle (in degrees)?
  12. 12.Are 63° and 27° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  13. 13.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the supplement of 76° (in degrees)?
  15. 15.What is the supplement of 81° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 81°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.What is the complement of 66° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One angle is 108°. What is its corresponding angle (in degrees)?
  19. 19.Two angles are supplementary. One is 134° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 103°. What is its corresponding angle (in degrees)?
  23. 23.What is the supplement of 132° (in degrees)?
  24. 24.What is the supplement of 61° (in degrees)?
  25. 25.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 161° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 106°. What is the angle next to it on the same line (in degrees)?
  30. 30.What is the complement of 12° (in degrees)?
  31. 31.Are 55° and 55° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  32. 32.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  33. 33.What is the complement of 70° (in degrees)?
  34. 34.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  35. 35.Are 23° and 86° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  36. 36.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)?
  37. 37.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 66°. What is its corresponding angle (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 90°. What is the angle next to it on the same line (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 70°. What is its alternate interior angle (in degrees)?

Answer key

  1. 42
  2. 79
  3. Neither
  4. 75
  5. 85
  6. 49
  7. 121
  8. 137
  9. 51
  10. 28
  11. 41
  12. Complementary
  13. 72
  14. 104
  15. 99
  16. 99
  17. 24
  18. 108
  19. 157
  20. 153
  21. 125
  22. 103
  23. 48
  24. 119
  25. 79
  26. 19
  27. 139
  28. 56
  29. 74
  30. 78
  31. Neither
  32. 60
  33. 20
  34. 93
  35. Neither
  36. 21
  37. 52
  38. 66
  39. 90
  40. 70

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