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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 982 · 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 parallel lines are cut by a transversal. One interior angle is 108°. What is its alternate interior angle (in degrees)?
  2. 2.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  3. 3.What is the complement of 65° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 82°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 54°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 40°. What is its alternate interior angle (in degrees)?
  7. 7.What is the supplement of 76° (in degrees)?
  8. 8.What is the complement of 26° (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 81°. What is its alternate interior angle (in degrees)?
  10. 10.What is the complement of 29° (in degrees)?
  11. 11.Are 17° and 169° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 79°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 120°. What is its other interior angle on the same side of the transversal (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 90°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Are 67° and 113° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  16. 16.Two straight lines cross each other. One of the angles formed is 80°. What is the angle next to it on the same line (in degrees)?
  17. 17.What is the supplement of 19° (in degrees)?
  18. 18.What is the supplement of 23° (in degrees)?
  19. 19.What is the complement of 14° (in degrees)?
  20. 20.What is the complement of 22° (in degrees)?
  21. 21.What is the complement of 19° (in degrees)?
  22. 22.What is the complement of 69° (in degrees)?
  23. 23.Are 22° and 158° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Two straight lines cross each other. One of the angles formed is 105°. What is the angle next to it on the same line (in degrees)?
  25. 25.What is the supplement of 15° (in degrees)?
  26. 26.What is the supplement of 115° (in degrees)?
  27. 27.Are 32° and 9° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.Two straight lines cross each other. One of the angles formed is 153°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
  30. 30.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)?
  31. 31.Are 75° and 15° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.What is the supplement of 141° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 23°. What is the angle next to it on the same line (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 120°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the supplement of 102° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its alternate interior angle (in degrees)?
  37. 37.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the supplement of 7° (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its other interior angle on the same side of the transversal (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 57°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 108
  2. 108
  3. 25
  4. 98
  5. 54
  6. 40
  7. 104
  8. 64
  9. 81
  10. 61
  11. Neither
  12. 101
  13. 60
  14. 90
  15. Supplementary
  16. 100
  17. 161
  18. 157
  19. 76
  20. 68
  21. 71
  22. 21
  23. Supplementary
  24. 75
  25. 165
  26. 65
  27. Neither
  28. 153
  29. 147
  30. 109
  31. Complementary
  32. 39
  33. 157
  34. 120
  35. 78
  36. 72
  37. 102
  38. 173
  39. 74
  40. 123

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