← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 991 · 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 parallel lines are cut by a transversal. One interior angle is 105°. What is its alternate interior angle (in degrees)?
  2. 2.What is the complement of 23° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 97°. What is its corresponding angle (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 120°. What is its alternate interior angle (in degrees)?
  5. 5.What is the supplement of 173° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 59°. What is its corresponding angle (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 121°. What is its other interior angle on the same side of the transversal (in degrees)?
  8. 8.Are 45° and 45° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  9. 9.What is the supplement of 89° (in degrees)?
  10. 10.What is the complement of 16° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 41°. What is the angle next to it on the same line (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 36°. What is its corresponding angle (in degrees)?
  13. 13.What is the supplement of 91° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 138°. What is its corresponding angle (in degrees)?
  15. 15.What is the complement of 34° (in degrees)?
  16. 16.What is the supplement of 82° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 122°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.What is the supplement of 85° (in degrees)?
  19. 19.What is the complement of 27° (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 80°. What is its corresponding angle (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 90°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 128°. What is its alternate interior angle (in degrees)?
  25. 25.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  26. 26.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the supplement of 169° (in degrees)?
  28. 28.What is the supplement of 9° (in degrees)?
  29. 29.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)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 104°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.What is the supplement of 122° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 147°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 87°. What is its other interior angle on the same side of the transversal (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 147°. What is its corresponding angle (in degrees)?
  35. 35.What is the complement of 37° (in degrees)?
  36. 36.Are 19° and 71° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  37. 37.Two straight lines cross each other. One of the angles formed is 62°. What is the angle vertically opposite to it (in degrees)?
  38. 38.What is the complement of 5° (in degrees)?
  39. 39.What is the complement of 84° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 23°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 105
  2. 67
  3. 97
  4. 120
  5. 7
  6. 59
  7. 59
  8. Complementary
  9. 91
  10. 74
  11. 139
  12. 36
  13. 89
  14. 138
  15. 56
  16. 98
  17. 58
  18. 95
  19. 63
  20. 80
  21. 90
  22. 65
  23. 153
  24. 128
  25. 71
  26. 111
  27. 11
  28. 171
  29. 60
  30. 76
  31. 58
  32. 33
  33. 93
  34. 147
  35. 53
  36. Complementary
  37. 62
  38. 85
  39. 6
  40. 23

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