← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 401 · 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 supplement of 134° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 80°. What is its alternate interior angle (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 111°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the supplement of 168° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 114°. What is its corresponding angle (in degrees)?
  7. 7.Are 39° and 51° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  8. 8.What is the supplement of 153° (in degrees)?
  9. 9.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  10. 10.Are 44° and 136° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  11. 11.Two straight lines cross each other. One of the angles formed is 82°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 59°. What is the angle vertically opposite to it (in degrees)?
  13. 13.What is the supplement of 38° (in degrees)?
  14. 14.Are 12° and 78° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  15. 15.What is the supplement of 34° (in degrees)?
  16. 16.Are 56° and 59° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  17. 17.Two straight lines cross each other. One of the angles formed is 135°. What is the angle next to it on the same line (in degrees)?
  18. 18.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 115°. What is its alternate interior angle (in degrees)?
  20. 20.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two angles are supplementary. One is 82° more than the other. What is the bigger angle (in degrees)?
  22. 22.Are 13° and 77° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  23. 23.Are 20° and 70° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  24. 24.Are 25° and 65° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  25. 25.What is the complement of 68° (in degrees)?
  26. 26.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 145°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the supplement of 65° (in degrees)?
  29. 29.What is the supplement of 146° (in degrees)?
  30. 30.Are 29° and 151° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  31. 31.Two straight lines cross each other. One of the angles formed is 83°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  33. 33.Are 11° and 132° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.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)?
  35. 35.Are 70° and 20° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.What is the supplement of 149° (in degrees)?
  37. 37.What is the complement of 41° (in degrees)?
  38. 38.What is the supplement of 174° (in degrees)?
  39. 39.What is the complement of 16° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 150°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 46
  2. 80
  3. 111
  4. 50
  5. 12
  6. 114
  7. Complementary
  8. 27
  9. 71
  10. Supplementary
  11. 82
  12. 59
  13. 142
  14. Complementary
  15. 146
  16. Neither
  17. 45
  18. 60
  19. 115
  20. 74
  21. 131
  22. Complementary
  23. Complementary
  24. Complementary
  25. 22
  26. 143
  27. 145
  28. 115
  29. 34
  30. Supplementary
  31. 83
  32. 79
  33. Neither
  34. 59
  35. Complementary
  36. 31
  37. 49
  38. 6
  39. 74
  40. 30

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