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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 629 · 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 155°. What is the angle next to it on the same line (in degrees)?
  2. 2.Are 50° and 130° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  3. 3.What is the supplement of 159° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 110°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 116°. What is the angle vertically opposite to it (in degrees)?
  6. 6.What is the supplement of 39° (in degrees)?
  7. 7.Are 69° and 81° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.What is the supplement of 66° (in degrees)?
  9. 9.What is the supplement of 87° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 138°. What is the angle next to it on the same line (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 99°. What is its other interior angle on the same side of the transversal (in degrees)?
  12. 12.Two angles are supplementary. One is 74° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 133°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Are 26° and 154° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  15. 15.What is the supplement of 32° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 134°. What is its corresponding angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 94°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  19. 19.What is the complement of 5° (in degrees)?
  20. 20.Are 39° and 141° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its alternate interior angle (in degrees)?
  22. 22.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 153°. What is the angle next to it on the same line (in degrees)?
  25. 25.Are 59° and 31° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  26. 26.Are 45° and 103° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  27. 27.Are 61° and 84° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  28. 28.Are 14° and 76° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  29. 29.What is the complement of 7° (in degrees)?
  30. 30.Are 18° and 162° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  31. 31.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  33. 33.Are 40° and 140° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  34. 34.Are 31° and 100° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.Are 52° and 83° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  36. 36.What is the supplement of 79° (in degrees)?
  37. 37.Are 15° and 76° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.Two straight lines cross each other. One of the angles formed is 90°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 114°. What is its other interior angle on the same side of the transversal (in degrees)?
  40. 40.Are 41° and 139° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

Answer key

  1. 25
  2. Supplementary
  3. 21
  4. 110
  5. 116
  6. 141
  7. Neither
  8. 114
  9. 93
  10. 42
  11. 81
  12. 127
  13. 133
  14. Supplementary
  15. 148
  16. 134
  17. 86
  18. 139
  19. 85
  20. Supplementary
  21. 125
  22. 105
  23. 70
  24. 27
  25. Complementary
  26. Neither
  27. Neither
  28. Complementary
  29. 83
  30. Supplementary
  31. 59
  32. 64
  33. Supplementary
  34. Neither
  35. Neither
  36. 101
  37. Neither
  38. 90
  39. 66
  40. Supplementary

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