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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 224 · 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.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  2. 2.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  3. 3.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 20° and 125°. What is the third angle (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  7. 7.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  10. 10.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  11. 11.Three angles meet at a point. Two of them are 150° and 110°. What is the third angle (in degrees)?
  12. 12.Two angles of a triangle are 35° and 115°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 220°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  26. 26.An angle measures 125°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  27. 27.An angle measures 105°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  28. 28.Two angles of a triangle are 100° and 25°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 75° and 85°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  31. 31.An angle measures 130°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  32. 32.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  35. 35.An angle measures 135°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  36. 36.Two angles of a triangle are 50° and 100°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?

Answer key

  1. 90
  2. Acute
  3. 150
  4. 130
  5. 35
  6. Straight
  7. 30
  8. 180
  9. 75
  10. Right
  11. 100
  12. 30
  13. 40
  14. 150
  15. 60
  16. 70
  17. 70
  18. 65
  19. 30
  20. 120
  21. 150
  22. 50
  23. 20
  24. 170
  25. 60
  26. Obtuse
  27. Obtuse
  28. 55
  29. 20
  30. 120
  31. Obtuse
  32. 45
  33. 70
  34. 80
  35. Obtuse
  36. 30
  37. 65
  38. 180
  39. 35
  40. 150

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