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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 904 · 40 sums
TalentJR

The method (Know the totals): Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°. On a straight line: the two angles add up to 180°. In a triangle: the three angles add up to 180°. Around a point: 360°. Clock: each hour mark is 30° apart (360° ÷ 12).

NameDateTime takenScore ___ / 40
  1. 1.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 80° and 80°. What is the third angle (in degrees)?
  3. 3.Two angles of a triangle are 25° and 75°. What is the third angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  5. 5.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  9. 9.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 100° and 150°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  16. 16.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  17. 17.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 95° and 45°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 30° and 120°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 25° and 105°. What is the third angle (in degrees)?
  30. 30.An angle measures 65°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  31. 31.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  33. 33.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  34. 34.Three angles meet at a point. Two of them are 90° and 100°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 90° and 170°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 55° and 115°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 140° and 140°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?

Answer key

  1. 130
  2. 200
  3. 80
  4. Right
  5. 40
  6. 25
  7. 30
  8. 150
  9. 75
  10. 170
  11. 30
  12. 80
  13. 80
  14. 110
  15. 20
  16. Obtuse
  17. 45
  18. 125
  19. 40
  20. 30
  21. 35
  22. 65
  23. 90
  24. 55
  25. 25
  26. 155
  27. 110
  28. 15
  29. 50
  30. Acute
  31. 85
  32. 60
  33. Straight
  34. 170
  35. 100
  36. 75
  37. 220
  38. 10
  39. 80
  40. 70

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