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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 609 · 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.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  4. 4.An angle measures 65°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  5. 5.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  9. 9.An angle measures 30°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  10. 10.An angle measures 15°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  11. 11.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 90° and 150°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 75° and 75°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  15. 15.An angle measures 95°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  16. 16.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 180°. What is the third angle (in degrees)?
  18. 18.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  19. 19.Two angles of a triangle are 45° and 120°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 30° and 20°. What is the third angle (in degrees)?
  21. 21.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  22. 22.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 35° and 105°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 60° and 100°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 25° and 145°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 70° and 20°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  37. 37.An angle measures 165°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  38. 38.An angle measures 150°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  39. 39.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  40. 40.Two angles of a triangle are 50° and 70°. What is the third angle (in degrees)?

Answer key

  1. 65
  2. 120
  3. 140
  4. Acute
  5. 10
  6. 20
  7. 100
  8. 140
  9. Acute
  10. Acute
  11. 180
  12. 120
  13. 30
  14. 150
  15. Obtuse
  16. 55
  17. 110
  18. Straight
  19. 15
  20. 130
  21. Right
  22. 100
  23. 90
  24. 60
  25. 40
  26. 150
  27. 20
  28. 10
  29. 90
  30. 180
  31. 25
  32. 110
  33. 60
  34. 10
  35. 45
  36. 30
  37. Obtuse
  38. Obtuse
  39. 150
  40. 60

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