← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 239 · 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 85° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 160°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the complement of 24° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 102°. What is its alternate interior angle (in degrees)?
  5. 5.Are 43° and 147° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 148°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 114°. What is the angle next to it on the same line (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 78°. What is its other interior angle on the same side of the transversal (in degrees)?
  9. 9.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  10. 10.Are 65° and 115° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  11. 11.Are 49° and 41° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.What is the supplement of 98° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 68°. What is its alternate interior angle (in degrees)?
  14. 14.Are 72° and 36° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  15. 15.What is the supplement of 147° (in degrees)?
  16. 16.What is the complement of 26° (in degrees)?
  17. 17.What is the supplement of 100° (in degrees)?
  18. 18.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  19. 19.Are 50° and 40° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 113°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Are 35° and 142° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.Two straight lines cross each other. One of the angles formed is 119°. What is the angle next to it on the same line (in degrees)?
  23. 23.What is the complement of 27° (in degrees)?
  24. 24.Are 20° and 118° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  25. 25.Are 79° and 11° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  26. 26.Two angles are supplementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  27. 27.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the supplement of 32° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 136°. What is the angle next to it on the same line (in degrees)?
  30. 30.What is the supplement of 130° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 107°. What is the angle next to it on the same line (in degrees)?
  32. 32.What is the complement of 37° (in degrees)?
  33. 33.What is the complement of 65° (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 91°. What is its corresponding angle (in degrees)?
  35. 35.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 94°. What is its corresponding angle (in degrees)?
  37. 37.What is the supplement of 36° (in degrees)?
  38. 38.Are 76° and 14° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  39. 39.Are 67° and 113° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  40. 40.What is the complement of 36° (in degrees)?

Answer key

  1. 5
  2. 160
  3. 66
  4. 102
  5. Neither
  6. 32
  7. 66
  8. 102
  9. 112
  10. Supplementary
  11. Complementary
  12. 82
  13. 68
  14. Neither
  15. 33
  16. 64
  17. 80
  18. 59
  19. Complementary
  20. 67
  21. Neither
  22. 61
  23. 63
  24. Neither
  25. Complementary
  26. 116
  27. 52
  28. 148
  29. 44
  30. 50
  31. 73
  32. 53
  33. 25
  34. 91
  35. 78
  36. 94
  37. 144
  38. Complementary
  39. Supplementary
  40. 54

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