← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 890 · 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 145°. What is its other interior angle on the same side of the transversal (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 104°. What is its corresponding angle (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 20°. What is the angle next to it on the same line (in degrees)?
  4. 4.What is the supplement of 148° (in degrees)?
  5. 5.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the supplement of 173° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 54°. What is its other interior angle on the same side of the transversal (in degrees)?
  8. 8.What is the supplement of 126° (in degrees)?
  9. 9.What is the complement of 11° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its other interior angle on the same side of the transversal (in degrees)?
  11. 11.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  12. 12.Are 71° and 19° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  13. 13.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  15. 15.Are 60° and 84° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two angles are supplementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  19. 19.What is the supplement of 20° (in degrees)?
  20. 20.Are 22° and 158° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  21. 21.Two straight lines cross each other. One of the angles formed is 73°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its alternate interior angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 109°. What is its alternate interior angle (in degrees)?
  24. 24.Are 28° and 54° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  25. 25.Two straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
  26. 26.What is the complement of 76° (in degrees)?
  27. 27.Are 57° and 33° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.Two straight lines cross each other. One of the angles formed is 52°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 29°. What is the angle next to it on the same line (in degrees)?
  30. 30.What is the supplement of 103° (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 68°. What is its corresponding angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 128°. What is its corresponding angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 124°. What is its corresponding angle (in degrees)?
  34. 34.Are 33° and 107° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  35. 35.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  36. 36.What is the complement of 21° (in degrees)?
  37. 37.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 76°. What is its alternate interior angle (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 85°. What is the angle vertically opposite to it (in degrees)?
  40. 40.Are 79° and 11° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

Answer key

  1. 35
  2. 104
  3. 160
  4. 32
  5. 117
  6. 7
  7. 126
  8. 54
  9. 79
  10. 121
  11. 79
  12. Complementary
  13. 78
  14. 132
  15. Neither
  16. 148
  17. 77
  18. 100
  19. 160
  20. Supplementary
  21. 73
  22. 56
  23. 109
  24. Neither
  25. 95
  26. 14
  27. Complementary
  28. 52
  29. 151
  30. 77
  31. 68
  32. 128
  33. 124
  34. Neither
  35. 108
  36. 69
  37. 74
  38. 76
  39. 85
  40. Complementary

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