← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 620 · 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 angles are supplementary. One is 94° more than the other. What is the bigger angle (in degrees)?
  2. 2.What is the supplement of 67° (in degrees)?
  3. 3.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the complement of 21° (in degrees)?
  5. 5.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the complement of 20° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 104°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 68°. What is its alternate interior angle (in degrees)?
  9. 9.Are 10° and 78° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  10. 10.What is the supplement of 131° (in degrees)?
  11. 11.What is the supplement of 172° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 83°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its alternate interior angle (in degrees)?
  14. 14.What is the complement of 65° (in degrees)?
  15. 15.What is the complement of 40° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 108°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.What is the supplement of 139° (in degrees)?
  18. 18.What is the supplement of 66° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Are 80° and 10° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.Two parallel lines are cut by a transversal. One angle is 55°. What is its corresponding angle (in degrees)?
  22. 22.Are 52° and 128° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 66°. What is its other interior angle on the same side of the transversal (in degrees)?
  24. 24.Two angles are supplementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 142°. What is the angle vertically opposite to it (in degrees)?
  26. 26.Are 42° and 48° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  27. 27.Two straight lines cross each other. One of the angles formed is 91°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 140°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the supplement of 81° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 44°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 93°. What is its corresponding angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 48°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the supplement of 105° (in degrees)?
  34. 34.Two angles are supplementary. One is 120° more than the other. What is the bigger angle (in degrees)?
  35. 35.Two angles are supplementary. One is 104° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 114°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 48°. What is its corresponding angle (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 39°. What is the angle next to it on the same line (in degrees)?
  39. 39.What is the complement of 8° (in degrees)?
  40. 40.What is the complement of 54° (in degrees)?

Answer key

  1. 137
  2. 113
  3. 120
  4. 69
  5. 112
  6. 70
  7. 104
  8. 68
  9. Neither
  10. 49
  11. 8
  12. 83
  13. 59
  14. 25
  15. 50
  16. 72
  17. 41
  18. 114
  19. 147
  20. Complementary
  21. 55
  22. Supplementary
  23. 114
  24. 94
  25. 142
  26. Complementary
  27. 91
  28. 140
  29. 99
  30. 44
  31. 93
  32. 132
  33. 75
  34. 150
  35. 142
  36. 66
  37. 48
  38. 141
  39. 82
  40. 36

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