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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 975 · 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 56°. What is its other interior angle on the same side of the transversal (in degrees)?
  2. 2.Are 29° and 92° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.Are 72° and 18° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  4. 4.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the supplement of 25° (in degrees)?
  6. 6.What is the complement of 80° (in degrees)?
  7. 7.What is the supplement of 120° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 32°. What is the angle next to it on the same line (in degrees)?
  9. 9.What is the supplement of 154° (in degrees)?
  10. 10.Two angles are supplementary. One is 124° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two angles are supplementary. One is 112° more than the other. What is the bigger angle (in degrees)?
  12. 12.Are 56° and 68° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  13. 13.What is the supplement of 61° (in degrees)?
  14. 14.Are 60° and 43° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 99°. What is its alternate interior angle (in degrees)?
  16. 16.What is the complement of 6° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 71°. What is the angle next to it on the same line (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 70°. What is its alternate interior angle (in degrees)?
  22. 22.What is the supplement of 100° (in degrees)?
  23. 23.Are 14° and 76° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Are 74° and 16° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  25. 25.What is the complement of 17° (in degrees)?
  26. 26.Are 62° and 118° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 95°. What is its alternate interior angle (in degrees)?
  28. 28.What is the complement of 48° (in degrees)?
  29. 29.What is the complement of 74° (in degrees)?
  30. 30.What is the complement of 72° (in degrees)?
  31. 31.What is the complement of 77° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 74°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the supplement of 59° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Are 13° and 167° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.What is the supplement of 104° (in degrees)?
  37. 37.Are 42° and 48° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  38. 38.What is the complement of 38° (in degrees)?
  39. 39.Are 18° and 96° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  40. 40.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 124
  2. Neither
  3. Complementary
  4. 53
  5. 155
  6. 10
  7. 60
  8. 148
  9. 26
  10. 152
  11. 146
  12. Neither
  13. 119
  14. Neither
  15. 99
  16. 84
  17. 86
  18. 156
  19. 141
  20. 109
  21. 70
  22. 80
  23. Complementary
  24. Complementary
  25. 73
  26. Supplementary
  27. 95
  28. 42
  29. 16
  30. 18
  31. 13
  32. 106
  33. 121
  34. 130
  35. Supplementary
  36. 76
  37. Complementary
  38. 52
  39. Neither
  40. 58

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