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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 973 · 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 8 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.An angle measures 45°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  4. 4.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?
  5. 5.An angle measures 10°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  6. 6.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  9. 9.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 20° and 120°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  12. 12.An angle measures 115°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  13. 13.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  16. 16.Two angles of a triangle are 30° and 140°. What is the third angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  18. 18.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  19. 19.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 45° and 90°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 70° and 30°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 35° and 125°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 80° and 80°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 75° and 60°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  35. 35.An angle measures 30°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  36. 36.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?

Answer key

  1. 120
  2. 60
  3. Acute
  4. 180
  5. Acute
  6. 170
  7. 10
  8. Straight
  9. 40
  10. 40
  11. 110
  12. Obtuse
  13. 155
  14. 70
  15. 90
  16. 10
  17. 30
  18. Right
  19. 150
  20. 45
  21. 55
  22. 35
  23. 80
  24. 120
  25. 5
  26. 50
  27. 20
  28. 130
  29. 120
  30. 15
  31. 200
  32. 45
  33. 55
  34. 180
  35. Acute
  36. 75
  37. 145
  38. 260
  39. 60
  40. 25

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