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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 979 · 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 straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
  2. 2.What is the complement of 15° (in degrees)?
  3. 3.Two angles are supplementary. One is 136° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the supplement of 50° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 159°. What is the angle vertically opposite to it (in degrees)?
  6. 6.What is the supplement of 83° (in degrees)?
  7. 7.What is the complement of 37° (in degrees)?
  8. 8.Are 59° and 31° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  9. 9.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the complement of 44° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 46°. What is its alternate interior angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 96°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Are 17° and 52° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  14. 14.What is the supplement of 10° (in degrees)?
  15. 15.What is the complement of 23° (in degrees)?
  16. 16.Two angles are supplementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the complement of 68° (in degrees)?
  18. 18.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  19. 19.What is the complement of 51° (in degrees)?
  20. 20.What is the complement of 59° (in degrees)?
  21. 21.Are 41° and 49° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.What is the complement of 36° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 34°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 42°. What is the angle next to it on the same line (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 58°. What is its corresponding angle (in degrees)?
  26. 26.Are 60° and 30° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  27. 27.Two straight lines cross each other. One of the angles formed is 44°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the supplement of 31° (in degrees)?
  29. 29.Are 12° and 168° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  30. 30.What is the complement of 49° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 118°. What is the angle next to it on the same line (in degrees)?
  32. 32.What is the supplement of 76° (in degrees)?
  33. 33.Two angles are complementary. One is 22° 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 57°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the complement of 69° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
  37. 37.What is the supplement of 17° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 41°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the supplement of 170° (in degrees)?
  40. 40.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 27
  2. 75
  3. 158
  4. 130
  5. 159
  6. 97
  7. 53
  8. Complementary
  9. 97
  10. 46
  11. 46
  12. 96
  13. Neither
  14. 170
  15. 67
  16. 113
  17. 22
  18. 61
  19. 39
  20. 31
  21. Complementary
  22. 54
  23. 34
  24. 138
  25. 58
  26. Complementary
  27. 44
  28. 149
  29. Supplementary
  30. 41
  31. 62
  32. 104
  33. 56
  34. 57
  35. 21
  36. 29
  37. 163
  38. 41
  39. 10
  40. 77

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