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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 969 · 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 21°. What is the angle next to it on the same line (in degrees)?
  2. 2.What is the supplement of 158° (in degrees)?
  3. 3.Are 77° and 103° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  4. 4.Are 45° and 45° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  5. 5.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  6. 6.Are 28° and 87° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  7. 7.Two straight lines cross each other. One of the angles formed is 146°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 96°. What is the angle vertically opposite to it (in degrees)?
  9. 9.Are 44° and 46° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  10. 10.What is the complement of 65° (in degrees)?
  11. 11.Are 14° and 66° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.Are 25° and 155° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  13. 13.What is the supplement of 78° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 110°. What is its corresponding angle (in degrees)?
  15. 15.Are 26° and 154° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  16. 16.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the supplement of 118° (in degrees)?
  18. 18.What is the complement of 37° (in degrees)?
  19. 19.What is the supplement of 22° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 133°. What is the angle next to it on the same line (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 27°. What is the angle next to it on the same line (in degrees)?
  22. 22.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two angles are complementary. One is 26° 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 96°. What is the angle next to it on the same line (in degrees)?
  25. 25.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  26. 26.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)?
  27. 27.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 51°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 137°. What is the angle next to it on the same line (in degrees)?
  30. 30.What is the supplement of 136° (in degrees)?
  31. 31.What is the supplement of 18° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 93°. What is its corresponding angle (in degrees)?
  33. 33.What is the complement of 6° (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 131°. What is its corresponding angle (in degrees)?
  35. 35.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 41°. What is the angle vertically opposite to it (in degrees)?
  37. 37.What is the supplement of 84° (in degrees)?
  38. 38.Two angles are supplementary. One is 42° 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 44°. What is the angle vertically opposite to it (in degrees)?
  40. 40.Are 18° and 72° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary

Answer key

  1. 159
  2. 22
  3. Supplementary
  4. Complementary
  5. 64
  6. Neither
  7. 146
  8. 96
  9. Complementary
  10. 25
  11. Neither
  12. Supplementary
  13. 102
  14. 110
  15. Supplementary
  16. 56
  17. 62
  18. 53
  19. 158
  20. 47
  21. 153
  22. 51
  23. 58
  24. 84
  25. 110
  26. 59
  27. 154
  28. 51
  29. 43
  30. 44
  31. 162
  32. 93
  33. 84
  34. 131
  35. 141
  36. 41
  37. 96
  38. 111
  39. 44
  40. Complementary

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