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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 398 · 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 61° (in degrees)?
  2. 2.Are 22° and 63° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  3. 3.Two straight lines cross each other. One of the angles formed is 76°. What is the angle vertically opposite to it (in degrees)?
  4. 4.What is the supplement of 67° (in degrees)?
  5. 5.What is the complement of 80° (in degrees)?
  6. 6.What is the supplement of 45° (in degrees)?
  7. 7.Are 54° and 11° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  8. 8.What is the complement of 51° (in degrees)?
  9. 9.What is the complement of 41° (in degrees)?
  10. 10.What is the supplement of 107° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 52°. 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 102°. What is its corresponding angle (in degrees)?
  13. 13.What is the complement of 82° (in degrees)?
  14. 14.What is the complement of 85° (in degrees)?
  15. 15.Two angles are supplementary. One is 108° more than the other. What is the bigger angle (in degrees)?
  16. 16.Are 24° and 128° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  17. 17.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 93°. What is the angle vertically opposite to it (in degrees)?
  20. 20.What is the supplement of 86° (in degrees)?
  21. 21.What is the supplement of 82° (in degrees)?
  22. 22.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 79°. What is the angle next to it on the same line (in degrees)?
  24. 24.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 73° (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 22°. What is the angle next to it on the same line (in degrees)?
  27. 27.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  28. 28.Are 59° and 31° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  29. 29.What is the supplement of 149° (in degrees)?
  30. 30.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  31. 31.What is the supplement of 59° (in degrees)?
  32. 32.What is the complement of 30° (in degrees)?
  33. 33.What is the complement of 13° (in degrees)?
  34. 34.Are 76° and 14° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its other interior angle on the same side of the transversal (in degrees)?
  36. 36.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 20° and 125° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  38. 38.Two parallel lines are cut by a transversal. One angle is 44°. What is its corresponding angle (in degrees)?
  39. 39.What is the complement of 70° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 117°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 29
  2. Neither
  3. 76
  4. 113
  5. 10
  6. 135
  7. Neither
  8. 39
  9. 49
  10. 73
  11. 128
  12. 102
  13. 8
  14. 5
  15. 144
  16. Neither
  17. 99
  18. 48
  19. 93
  20. 94
  21. 98
  22. 65
  23. 101
  24. 73
  25. 107
  26. 158
  27. 66
  28. Complementary
  29. 31
  30. 71
  31. 121
  32. 60
  33. 77
  34. Complementary
  35. 121
  36. 68
  37. Neither
  38. 44
  39. 20
  40. 117

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