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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 466 · 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.Are 50° and 40° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.What is the supplement of 88° (in degrees)?
  3. 3.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)?
  4. 4.What is the complement of 41° (in degrees)?
  5. 5.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two angles are supplementary. One is 136° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 141°. What is the angle next to it on the same line (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 160°. What is the angle next to it on the same line (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 126°. What is its other interior angle on the same side of the transversal (in degrees)?
  10. 10.Are 21° and 69° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  11. 11.Two parallel lines are cut by a transversal. One angle is 61°. What is its corresponding angle (in degrees)?
  12. 12.Are 24° and 43° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.Are 24° and 66° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  14. 14.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the complement of 18° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 126°. What is the angle next to it on the same line (in degrees)?
  17. 17.Are 10° and 170° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  18. 18.What is the supplement of 76° (in degrees)?
  19. 19.Are 15° and 165° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  20. 20.What is the complement of 11° (in degrees)?
  21. 21.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the supplement of 118° (in degrees)?
  23. 23.What is the complement of 59° (in degrees)?
  24. 24.What is the complement of 77° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the complement of 45° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 23°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 35°. What is its corresponding angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 51°. What is the angle next to it on the same line (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 103°. What is the angle next to it on the same line (in degrees)?
  31. 31.Are 64° and 116° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  33. 33.What is the supplement of 98° (in degrees)?
  34. 34.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)?
  35. 35.Are 18° and 72° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  36. 36.What is the supplement of 112° (in degrees)?
  37. 37.Two angles are supplementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 88°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the complement of 71° (in degrees)?
  40. 40.What is the complement of 37° (in degrees)?

Answer key

  1. Complementary
  2. 92
  3. 25
  4. 49
  5. 49
  6. 158
  7. 39
  8. 20
  9. 54
  10. Complementary
  11. 61
  12. Neither
  13. Complementary
  14. 48
  15. 72
  16. 54
  17. Supplementary
  18. 104
  19. Supplementary
  20. 79
  21. 154
  22. 62
  23. 31
  24. 13
  25. 32
  26. 45
  27. 23
  28. 35
  29. 129
  30. 77
  31. Supplementary
  32. 110
  33. 82
  34. 159
  35. Complementary
  36. 68
  37. 106
  38. 88
  39. 19
  40. 53

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