← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 234 · 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 43° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its alternate interior angle (in degrees)?
  3. 3.What is the complement of 70° (in degrees)?
  4. 4.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the supplement of 139° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 30°. What is the angle vertically opposite to it (in degrees)?
  7. 7.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its alternate interior angle (in degrees)?
  9. 9.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  10. 10.Are 34° and 146° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  11. 11.What is the complement of 69° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 40°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Are 77° and 13° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its other interior angle on the same side of the transversal (in degrees)?
  15. 15.What is the complement of 77° (in degrees)?
  16. 16.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  17. 17.Are 31° and 149° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  18. 18.Are 61° and 29° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  19. 19.What is the supplement of 77° (in degrees)?
  20. 20.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  21. 21.What is the complement of 59° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  23. 23.What is the complement of 24° (in degrees)?
  24. 24.Two angles are supplementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the complement of 23° (in degrees)?
  26. 26.Are 58° and 32° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  27. 27.What is the complement of 5° (in degrees)?
  28. 28.What is the supplement of 25° (in degrees)?
  29. 29.Are 28° and 152° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  30. 30.Two angles are supplementary. One is 108° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 40°. What is its corresponding angle (in degrees)?
  33. 33.Are 16° and 7° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.What is the supplement of 90° (in degrees)?
  35. 35.What is the complement of 56° (in degrees)?
  36. 36.Are 57° and 33° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  37. 37.Two angles are supplementary. One is 110° more than the other. What is the bigger angle (in degrees)?
  38. 38.Are 56° and 34° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  39. 39.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 22° and 158° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary

Answer key

  1. 47
  2. 72
  3. 20
  4. 112
  5. 41
  6. 30
  7. 77
  8. 123
  9. 68
  10. Supplementary
  11. 21
  12. 140
  13. Complementary
  14. 74
  15. 13
  16. 102
  17. Supplementary
  18. Complementary
  19. 103
  20. Complementary
  21. 31
  22. 124
  23. 66
  24. 115
  25. 67
  26. Complementary
  27. 85
  28. 155
  29. Supplementary
  30. 144
  31. 47
  32. 40
  33. Neither
  34. 90
  35. 34
  36. Complementary
  37. 145
  38. Complementary
  39. 97
  40. Supplementary

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