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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 696 · 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 supplement of 82° (in degrees)?
  2. 2.What is the supplement of 33° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 28°. What is the angle vertically opposite to it (in degrees)?
  4. 4.What is the complement of 58° (in degrees)?
  5. 5.Are 18° and 26° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  6. 6.What is the complement of 29° (in degrees)?
  7. 7.What is the complement of 62° (in degrees)?
  8. 8.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the supplement of 130° (in degrees)?
  10. 10.Are 66° and 24° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  11. 11.Two straight lines cross each other. One of the angles formed is 142°. What is the angle next to it on the same line (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its alternate interior angle (in degrees)?
  15. 15.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 85°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 68°. What is the angle next to it on the same line (in degrees)?
  19. 19.What is the complement of 85° (in degrees)?
  20. 20.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 81°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.What is the supplement of 14° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 47°. What is the angle next to it on the same line (in degrees)?
  24. 24.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 59° (in degrees)?
  27. 27.Are 43° and 47° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  28. 28.Two straight lines cross each other. One of the angles formed is 141°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two angles are supplementary. One is 114° more than the other. What is the bigger angle (in degrees)?
  30. 30.Are 15° and 145° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  31. 31.Two angles are supplementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two angles are supplementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its alternate interior angle (in degrees)?
  34. 34.Are 60° and 57° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  35. 35.Two straight lines cross each other. One of the angles formed is 77°. What is the angle next to it on the same line (in degrees)?
  36. 36.Are 44° and 136° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.What is the complement of 63° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 25°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two angles are supplementary. One is 24° 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 124°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 98
  2. 147
  3. 28
  4. 32
  5. Neither
  6. 61
  7. 28
  8. 79
  9. 50
  10. Complementary
  11. 38
  12. 139
  13. 54
  14. 56
  15. 50
  16. 72
  17. 95
  18. 112
  19. 5
  20. 98
  21. 99
  22. 166
  23. 133
  24. 133
  25. 69
  26. 121
  27. Complementary
  28. 141
  29. 147
  30. Neither
  31. 100
  32. 101
  33. 123
  34. Neither
  35. 103
  36. Supplementary
  37. 27
  38. 155
  39. 102
  40. 56

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