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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 512 · 40 sums
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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.An angle measures 110°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  2. 2.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  3. 3.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  4. 4.An angle measures 30°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  5. 5.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  6. 6.Two angles of a triangle are 30° and 145°. What is the third angle (in degrees)?
  7. 7.An angle measures 45°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  8. 8.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  9. 9.An angle measures 10°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  10. 10.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  15. 15.An angle measures 150°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  16. 16.Three angles meet at a point. Two of them are 80° and 100°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 60° and 120°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 90° and 55°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?

Answer key

  1. Obtuse
  2. Right
  3. Straight
  4. Acute
  5. 180
  6. 5
  7. Acute
  8. 165
  9. Acute
  10. 130
  11. 15
  12. 90
  13. 35
  14. 170
  15. Obtuse
  16. 180
  17. 60
  18. 70
  19. 120
  20. 55
  21. 180
  22. 100
  23. 90
  24. 120
  25. 150
  26. 25
  27. 80
  28. 180
  29. 80
  30. 85
  31. 10
  32. 30
  33. 180
  34. 35
  35. 25
  36. 65
  37. 75
  38. 30
  39. 150
  40. 60

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