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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 973 · 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 straight lines cross each other. One of the angles formed is 136°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  3. 3.What is the complement of 23° (in degrees)?
  4. 4.Two angles are supplementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 64°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Are 40° and 7° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  7. 7.What is the complement of 57° (in degrees)?
  8. 8.What is the complement of 13° (in degrees)?
  9. 9.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
  10. 10.Are 29° and 11° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  11. 11.Two straight lines cross each other. One of the angles formed is 110°. What is the angle next to it on the same line (in degrees)?
  12. 12.What is the complement of 39° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 116°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 95°. What is its alternate interior angle (in degrees)?
  15. 15.Are 13° and 28° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  16. 16.Two angles are supplementary. One is 104° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two angles are supplementary. One is 124° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the complement of 36° (in degrees)?
  19. 19.What is the supplement of 42° (in degrees)?
  20. 20.What is the complement of 21° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 86°. What is its alternate interior angle (in degrees)?
  22. 22.Are 69° and 29° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  23. 23.What is the supplement of 34° (in degrees)?
  24. 24.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 80°. What is its corresponding angle (in degrees)?
  26. 26.What is the complement of 51° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 20°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 88°. What is its alternate interior angle (in degrees)?
  29. 29.What is the complement of 42° (in degrees)?
  30. 30.What is the supplement of 162° (in degrees)?
  31. 31.Are 50° and 130° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.What is the complement of 68° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 59°. What is the angle vertically opposite to it (in degrees)?
  34. 34.What is the supplement of 77° (in degrees)?
  35. 35.Are 79° and 101° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  36. 36.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 79°. What is its corresponding angle (in degrees)?
  38. 38.What is the complement of 46° (in degrees)?
  39. 39.What is the supplement of 79° (in degrees)?
  40. 40.What is the complement of 17° (in degrees)?

Answer key

  1. 136
  2. 118
  3. 67
  4. 113
  5. 116
  6. Neither
  7. 33
  8. 77
  9. 153
  10. Neither
  11. 70
  12. 51
  13. 116
  14. 95
  15. Neither
  16. 142
  17. 152
  18. 54
  19. 138
  20. 69
  21. 86
  22. Neither
  23. 146
  24. 91
  25. 80
  26. 39
  27. 20
  28. 88
  29. 48
  30. 18
  31. Supplementary
  32. 22
  33. 59
  34. 103
  35. Supplementary
  36. 68
  37. 79
  38. 44
  39. 101
  40. 73

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