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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 874 · 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 complement of 16° (in degrees)?
  2. 2.What is the supplement of 12° (in degrees)?
  3. 3.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the complement of 39° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One angle is 90°. What is its corresponding angle (in degrees)?
  6. 6.What is the complement of 68° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 107°. What is its corresponding angle (in degrees)?
  8. 8.What is the supplement of 151° (in degrees)?
  9. 9.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the complement of 45° (in degrees)?
  11. 11.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)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 116°. What is its corresponding angle (in degrees)?
  13. 13.Are 12° and 78° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  14. 14.What is the supplement of 100° (in degrees)?
  15. 15.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the complement of 40° (in degrees)?
  17. 17.What is the supplement of 136° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 69°. What is the angle vertically opposite to it (in degrees)?
  19. 19.What is the supplement of 112° (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 127°. What is its corresponding angle (in degrees)?
  21. 21.Are 71° and 19° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  22. 22.What is the complement of 78° (in degrees)?
  23. 23.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 90°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.What is the complement of 66° (in degrees)?
  26. 26.What is the supplement of 18° (in degrees)?
  27. 27.What is the complement of 38° (in degrees)?
  28. 28.What is the supplement of 85° (in degrees)?
  29. 29.What is the complement of 34° (in degrees)?
  30. 30.Are 62° and 118° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  33. 33.What is the complement of 31° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 40°. What is the angle next to it on the same line (in degrees)?
  35. 35.What is the supplement of 29° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 48°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 56°. What is the angle next to it on the same line (in degrees)?
  38. 38.Are 49° and 131° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  39. 39.Two parallel lines are cut by a transversal. One angle is 70°. What is its corresponding angle (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its other interior angle on the same side of the transversal (in degrees)?

Answer key

  1. 74
  2. 168
  3. 73
  4. 51
  5. 90
  6. 22
  7. 107
  8. 29
  9. 138
  10. 45
  11. 116
  12. 116
  13. Complementary
  14. 80
  15. 156
  16. 50
  17. 44
  18. 69
  19. 68
  20. 127
  21. Complementary
  22. 12
  23. 50
  24. 90
  25. 24
  26. 162
  27. 52
  28. 95
  29. 56
  30. Supplementary
  31. 66
  32. 98
  33. 59
  34. 140
  35. 151
  36. 132
  37. 124
  38. Supplementary
  39. 70
  40. 40

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