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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 627 · 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 77° (in degrees)?
  2. 2.Are 14° and 76° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 119°. What is its alternate interior angle (in degrees)?
  4. 4.What is the supplement of 149° (in degrees)?
  5. 5.Are 25° and 155° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  6. 6.Two parallel lines are cut by a transversal. One angle is 130°. What is its corresponding angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 156°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the supplement of 45° (in degrees)?
  9. 9.What is the complement of 16° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 87°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 122°. What is the angle next to it on the same line (in degrees)?
  12. 12.What is the supplement of 26° (in degrees)?
  13. 13.What is the supplement of 74° (in degrees)?
  14. 14.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 101°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  17. 17.Are 39° and 51° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 97°. What is its alternate interior angle (in degrees)?
  20. 20.What is the supplement of 172° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 134°. What is the angle vertically opposite to it (in degrees)?
  22. 22.What is the complement of 48° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its alternate interior angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 73°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.What is the supplement of 138° (in degrees)?
  26. 26.What is the supplement of 8° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One angle is 46°. What is its corresponding angle (in degrees)?
  28. 28.What is the complement of 35° (in degrees)?
  29. 29.Are 66° and 24° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its alternate interior angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 78°. What is the angle next to it on the same line (in degrees)?
  32. 32.What is the supplement of 127° (in degrees)?
  33. 33.What is the complement of 42° (in degrees)?
  34. 34.Are 55° and 10° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.Two straight lines cross each other. One of the angles formed is 109°. What is the angle next to it on the same line (in degrees)?
  36. 36.Are 39° and 161° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.What is the complement of 37° (in degrees)?
  38. 38.What is the complement of 23° (in degrees)?
  39. 39.What is the supplement of 9° (in degrees)?
  40. 40.Are 14° and 56° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary

Answer key

  1. 103
  2. Complementary
  3. 119
  4. 31
  5. Supplementary
  6. 130
  7. 156
  8. 135
  9. 74
  10. 87
  11. 58
  12. 154
  13. 106
  14. 50
  15. 101
  16. 71
  17. Complementary
  18. 103
  19. 97
  20. 8
  21. 134
  22. 42
  23. 56
  24. 107
  25. 42
  26. 172
  27. 46
  28. 55
  29. Complementary
  30. 48
  31. 102
  32. 53
  33. 48
  34. Neither
  35. 71
  36. Neither
  37. 53
  38. 67
  39. 171
  40. Neither

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