← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 190 · 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 40°. What is the angle next to it on the same line (in degrees)?
  2. 2.What is the supplement of 20° (in degrees)?
  3. 3.What is the complement of 73° (in degrees)?
  4. 4.What is the complement of 35° (in degrees)?
  5. 5.What is the supplement of 34° (in degrees)?
  6. 6.What is the complement of 33° (in degrees)?
  7. 7.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the supplement of 93° (in degrees)?
  10. 10.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 69° and 21° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.Are 53° and 9° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  13. 13.Are 39° and 51° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  14. 14.What is the supplement of 112° (in degrees)?
  15. 15.What is the complement of 41° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 54°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the complement of 49° (in degrees)?
  18. 18.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  19. 19.Are 79° and 54° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  20. 20.What is the supplement of 97° (in degrees)?
  21. 21.Are 13° and 167° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.Are 80° and 100° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  23. 23.What is the supplement of 7° (in degrees)?
  24. 24.What is the supplement of 39° (in degrees)?
  25. 25.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)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 103°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  28. 28.Are 58° and 32° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  29. 29.Two parallel lines are cut by a transversal. One angle is 97°. What is its corresponding angle (in degrees)?
  30. 30.What is the supplement of 59° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 120°. What is the angle next to it on the same line (in degrees)?
  32. 32.Are 55° and 125° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its other interior angle on the same side of the transversal (in degrees)?
  34. 34.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 58° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 70°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the complement of 31° (in degrees)?
  39. 39.Are 78° and 21° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  40. 40.Two straight lines cross each other. One of the angles formed is 148°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 140
  2. 160
  3. 17
  4. 55
  5. 146
  6. 57
  7. 49
  8. 114
  9. 87
  10. 58
  11. Complementary
  12. Neither
  13. Complementary
  14. 68
  15. 49
  16. 54
  17. 41
  18. 107
  19. Neither
  20. 83
  21. Supplementary
  22. Supplementary
  23. 173
  24. 141
  25. 46
  26. 77
  27. 121
  28. Complementary
  29. 97
  30. 121
  31. 60
  32. Supplementary
  33. 35
  34. 60
  35. 32
  36. 110
  37. 99
  38. 59
  39. Neither
  40. 32

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