← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 254 · 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 complement of 5° (in degrees)?
  2. 2.Are 73° and 5° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  3. 3.What is the complement of 60° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 130°. What is its alternate interior angle (in degrees)?
  5. 5.Two angles are supplementary. One is 114° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the supplement of 40° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 139°. What is its other interior angle on the same side of the transversal (in degrees)?
  8. 8.Are 42° and 48° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  9. 9.What is the complement of 15° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 133°. What is the angle vertically opposite to it (in degrees)?
  11. 11.What is the complement of 81° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two angles are supplementary. One is 136° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the supplement of 131° (in degrees)?
  15. 15.Are 30° and 60° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its alternate interior angle (in degrees)?
  17. 17.Are 76° and 49° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.What is the complement of 6° (in degrees)?
  19. 19.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  20. 20.Are 19° and 16° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 115°. What is its alternate interior angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the supplement of 10° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?
  26. 26.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its alternate interior angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 68°. What is its corresponding angle (in degrees)?
  29. 29.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the supplement of 18° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  33. 33.What is the supplement of 172° (in degrees)?
  34. 34.What is the complement of 47° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 98°. What is the angle vertically opposite to it (in degrees)?
  37. 37.What is the supplement of 58° (in degrees)?
  38. 38.Are 55° and 125° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  39. 39.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 156°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 85
  2. Neither
  3. 30
  4. 130
  5. 147
  6. 140
  7. 41
  8. Complementary
  9. 75
  10. 133
  11. 9
  12. 55
  13. 158
  14. 49
  15. Complementary
  16. 106
  17. Neither
  18. 84
  19. 80
  20. Neither
  21. 115
  22. 139
  23. 56
  24. 170
  25. 43
  26. 119
  27. 60
  28. 68
  29. 71
  30. 162
  31. 130
  32. 70
  33. 8
  34. 43
  35. 68
  36. 98
  37. 122
  38. Supplementary
  39. 76
  40. 24

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets