← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 18 · 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 5° (in degrees)?
  2. 2.What is the supplement of 21° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 67°. What is the angle vertically opposite to it (in degrees)?
  4. 4.What is the supplement of 125° (in degrees)?
  5. 5.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the supplement of 146° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 116°. What is the angle next to it on the same line (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 143°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the complement of 63° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 111°. What is its corresponding angle (in degrees)?
  11. 11.Two angles are supplementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 139°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 112°. What is its alternate interior angle (in degrees)?
  14. 14.What is the complement of 12° (in degrees)?
  15. 15.What is the complement of 28° (in degrees)?
  16. 16.What is the supplement of 105° (in degrees)?
  17. 17.Are 79° and 11° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 42°. What is its alternate interior angle (in degrees)?
  19. 19.What is the supplement of 47° (in degrees)?
  20. 20.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)?
  21. 21.What is the supplement of 129° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  23. 23.What is the supplement of 73° (in degrees)?
  24. 24.What is the supplement of 120° (in degrees)?
  25. 25.What is the supplement of 114° (in degrees)?
  26. 26.What is the supplement of 112° (in degrees)?
  27. 27.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  28. 28.Are 74° and 98° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  29. 29.What is the supplement of 173° (in degrees)?
  30. 30.What is the supplement of 49° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 84°. What is the angle next to it on the same line (in degrees)?
  32. 32.What is the complement of 51° (in degrees)?
  33. 33.What is the complement of 69° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 34°. What is the angle next to it on the same line (in degrees)?
  35. 35.What is the supplement of 113° (in degrees)?
  36. 36.Are 26° and 154° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  37. 37.Are 51° and 39° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  38. 38.Two parallel lines are cut by a transversal. One angle is 62°. What is its corresponding angle (in degrees)?
  39. 39.What is the supplement of 139° (in degrees)?
  40. 40.Are 67° and 23° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

Answer key

  1. 175
  2. 159
  3. 67
  4. 55
  5. 65
  6. 34
  7. 64
  8. 143
  9. 27
  10. 111
  11. 106
  12. 41
  13. 112
  14. 78
  15. 62
  16. 75
  17. Complementary
  18. 42
  19. 133
  20. 45
  21. 51
  22. 128
  23. 107
  24. 60
  25. 66
  26. 68
  27. 57
  28. Neither
  29. 7
  30. 131
  31. 96
  32. 39
  33. 21
  34. 146
  35. 67
  36. Supplementary
  37. Complementary
  38. 62
  39. 41
  40. Complementary

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