← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 201 · 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 52°. What is its alternate interior angle (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 126°. What is the angle next to it on the same line (in degrees)?
  3. 3.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  4. 4.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the complement of 20° (in degrees)?
  6. 6.What is the complement of 11° (in degrees)?
  7. 7.What is the complement of 56° (in degrees)?
  8. 8.What is the complement of 17° (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One angle is 120°. What is its corresponding angle (in degrees)?
  10. 10.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)?
  11. 11.Are 73° and 156° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  12. 12.What is the complement of 80° (in degrees)?
  13. 13.Are 21° and 159° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  14. 14.Two straight lines cross each other. One of the angles formed is 69°. What is the angle next to it on the same line (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 72°. What is the angle next to it on the same line (in degrees)?
  16. 16.Are 28° and 125° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  17. 17.Two straight lines cross each other. One of the angles formed is 39°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 91°. What is its alternate interior angle (in degrees)?
  19. 19.Are 14° and 166° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  20. 20.Are 31° and 149° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  21. 21.Two angles are supplementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the supplement of 164° (in degrees)?
  23. 23.What is the supplement of 5° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 31°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 149°. What is the angle next to it on the same line (in degrees)?
  26. 26.What is the complement of 28° (in degrees)?
  27. 27.What is the supplement of 39° (in degrees)?
  28. 28.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its other interior angle on the same side of the transversal (in degrees)?
  30. 30.What is the complement of 12° (in degrees)?
  31. 31.What is the complement of 25° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 115°. 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 angle is 112°. What is its corresponding angle (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 87°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Are 54° and 43° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.What is the supplement of 134° (in degrees)?
  37. 37.What is the supplement of 56° (in degrees)?
  38. 38.Two angles are supplementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 57°. What is the angle next to it on the same line (in degrees)?
  40. 40.Are 47° and 43° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

Answer key

  1. 52
  2. 54
  3. 159
  4. 79
  5. 70
  6. 79
  7. 34
  8. 73
  9. 120
  10. 59
  11. Neither
  12. 10
  13. Supplementary
  14. 111
  15. 108
  16. Neither
  17. 39
  18. 91
  19. Supplementary
  20. Supplementary
  21. 94
  22. 16
  23. 175
  24. 31
  25. 31
  26. 62
  27. 141
  28. 68
  29. 150
  30. 78
  31. 65
  32. 65
  33. 112
  34. 87
  35. Neither
  36. 46
  37. 124
  38. 101
  39. 123
  40. Complementary

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