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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 415 · 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 angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  2. 2.What is the complement of 71° (in degrees)?
  3. 3.Are 29° and 151° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  4. 4.What is the complement of 42° (in degrees)?
  5. 5.Are 17° and 134° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  6. 6.Are 66° and 114° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  7. 7.Two straight lines cross each other. One of the angles formed is 93°. What is the angle next to it on the same line (in degrees)?
  8. 8.What is the supplement of 43° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 60°. What is the angle next to it on the same line (in degrees)?
  10. 10.Are 72° and 108° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  11. 11.Two straight lines cross each other. One of the angles formed is 144°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two angles are supplementary. One is 104° more than the other. What is the bigger angle (in degrees)?
  14. 14.Are 80° and 100° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  15. 15.What is the complement of 25° (in degrees)?
  16. 16.Are 18° and 72° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  17. 17.What is the supplement of 15° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 34°. What is the angle vertically opposite to it (in degrees)?
  19. 19.What is the supplement of 109° (in degrees)?
  20. 20.Are 39° and 51° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  21. 21.Are 64° and 26° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  23. 23.What is the supplement of 72° (in degrees)?
  24. 24.What is the supplement of 10° (in degrees)?
  25. 25.Are 50° and 32° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  26. 26.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the complement of 28° (in degrees)?
  28. 28.Are 72° and 18° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  29. 29.What is the complement of 54° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 89°. What is the angle next to it on the same line (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 71°. What is its other interior angle on the same side of the transversal (in degrees)?
  32. 32.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  33. 33.Are 70° and 114° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.Are 44° and 59° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.What is the supplement of 6° (in degrees)?
  36. 36.What is the complement of 57° (in degrees)?
  37. 37.What is the complement of 52° (in degrees)?
  38. 38.What is the supplement of 85° (in degrees)?
  39. 39.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 57
  2. 19
  3. Supplementary
  4. 48
  5. Neither
  6. Supplementary
  7. 87
  8. 137
  9. 120
  10. Supplementary
  11. 144
  12. 130
  13. 142
  14. Supplementary
  15. 65
  16. Complementary
  17. 165
  18. 34
  19. 71
  20. Complementary
  21. Complementary
  22. 24
  23. 108
  24. 170
  25. Neither
  26. 64
  27. 62
  28. Complementary
  29. 36
  30. 91
  31. 109
  32. Complementary
  33. Neither
  34. Neither
  35. 174
  36. 33
  37. 38
  38. 95
  39. 117
  40. 128

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