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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 378 · 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 27° (in degrees)?
  2. 2.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 33°. What is its corresponding angle (in degrees)?
  4. 4.Are 50° and 130° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  5. 5.Two straight lines cross each other. One of the angles formed is 115°. What is the angle next to it on the same line (in degrees)?
  6. 6.What is the complement of 44° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 41°. What is its corresponding angle (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 134°. What is the angle next to it on the same line (in degrees)?
  9. 9.What is the supplement of 23° (in degrees)?
  10. 10.What is the complement of 46° (in degrees)?
  11. 11.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the complement of 61° (in degrees)?
  13. 13.What is the complement of 9° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 92°. What is its corresponding angle (in degrees)?
  15. 15.Are 16° and 74° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  16. 16.Two straight lines cross each other. One of the angles formed is 154°. What is the angle next to it on the same line (in degrees)?
  17. 17.What is the supplement of 45° (in degrees)?
  18. 18.Two angles are supplementary. One is 114° 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 127°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 97°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Are 25° and 21° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  22. 22.Two straight lines cross each other. One of the angles formed is 70°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 122°. What is its alternate interior angle (in degrees)?
  25. 25.What is the complement of 80° (in degrees)?
  26. 26.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)?
  27. 27.Two straight lines cross each other. One of the angles formed is 90°. What is the angle next to it on the same line (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 36°. What is its other interior angle on the same side of the transversal (in degrees)?
  29. 29.What is the complement of 49° (in degrees)?
  30. 30.Are 19° and 71° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  31. 31.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  32. 32.Are 72° and 33° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  33. 33.Two straight lines cross each other. One of the angles formed is 51°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the supplement of 118° (in degrees)?
  36. 36.What is the complement of 14° (in degrees)?
  37. 37.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the complement of 69° (in degrees)?
  39. 39.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 126°. What is its alternate interior angle (in degrees)?

Answer key

  1. 63
  2. 130
  3. 33
  4. Supplementary
  5. 65
  6. 46
  7. 41
  8. 46
  9. 157
  10. 44
  11. 91
  12. 29
  13. 81
  14. 92
  15. Complementary
  16. 26
  17. 135
  18. 147
  19. 127
  20. 97
  21. Neither
  22. 110
  23. 60
  24. 122
  25. 10
  26. 109
  27. 90
  28. 144
  29. 41
  30. Complementary
  31. 70
  32. Neither
  33. 51
  34. 107
  35. 62
  36. 76
  37. 103
  38. 21
  39. 117
  40. 126

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