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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 58 · 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 57° (in degrees)?
  2. 2.What is the supplement of 34° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 149°. What is its alternate interior angle (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One angle is 96°. What is its corresponding angle (in degrees)?
  6. 6.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 43°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Are 65° and 25° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  9. 9.What is the complement of 64° (in degrees)?
  10. 10.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  11. 11.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)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 100°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Are 48° and 132° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  14. 14.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Are 50° and 44° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  16. 16.What is the supplement of 30° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 94°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its alternate interior angle (in degrees)?
  19. 19.Are 14° and 76° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  20. 20.What is the complement of 68° (in degrees)?
  21. 21.What is the complement of 5° (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 107°. What is its other interior angle on the same side of the transversal (in degrees)?
  23. 23.What is the complement of 21° (in degrees)?
  24. 24.What is the supplement of 76° (in degrees)?
  25. 25.What is the complement of 18° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its alternate interior angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 89°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the supplement of 37° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 143°. What is its corresponding angle (in degrees)?
  30. 30.What is the supplement of 172° (in degrees)?
  31. 31.Two angles are supplementary. One is 114° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the supplement of 134° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 70°. What is the angle vertically opposite to it (in degrees)?
  34. 34.What is the complement of 39° (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One angle is 46°. What is its corresponding angle (in degrees)?
  36. 36.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)?
  37. 37.What is the complement of 20° (in degrees)?
  38. 38.What is the supplement of 123° (in degrees)?
  39. 39.What is the supplement of 51° (in degrees)?
  40. 40.What is the supplement of 68° (in degrees)?

Answer key

  1. 123
  2. 146
  3. 149
  4. 55
  5. 96
  6. 121
  7. 43
  8. Complementary
  9. 26
  10. 54
  11. 45
  12. 80
  13. Supplementary
  14. 152
  15. Neither
  16. 150
  17. 94
  18. 65
  19. Complementary
  20. 22
  21. 85
  22. 73
  23. 69
  24. 104
  25. 72
  26. 145
  27. 89
  28. 143
  29. 143
  30. 8
  31. 147
  32. 46
  33. 70
  34. 51
  35. 46
  36. 150
  37. 70
  38. 57
  39. 129
  40. 112

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