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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 472 · 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 65°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 80° and 70°. What is the third angle (in degrees)?
  4. 4.An angle measures 170°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  5. 5.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  6. 6.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  7. 7.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  8. 8.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. 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 10 o'clock (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  15. 15.An angle measures 40°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  16. 16.Two angles of a triangle are 35° and 100°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 60° and 150°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  23. 23.An angle measures 60°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  24. 24.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  25. 25.An angle measures 130°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  26. 26.An angle measures 45°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  27. 27.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  28. 28.An angle measures 20°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  29. 29.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  30. 30.An angle measures 110°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  31. 31.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  32. 32.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  33. 33.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  35. 35.Two angles of a triangle are 25° and 100°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  37. 37.Two angles of a triangle are 100° and 70°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?

Answer key

  1. 25
  2. 170
  3. 210
  4. Obtuse
  5. Straight
  6. 30
  7. Right
  8. 80
  9. 180
  10. 130
  11. 105
  12. 60
  13. 60
  14. 230
  15. Acute
  16. 45
  17. 60
  18. 150
  19. 150
  20. 180
  21. 150
  22. 120
  23. Acute
  24. 50
  25. Obtuse
  26. Acute
  27. 140
  28. Acute
  29. 60
  30. Obtuse
  31. 15
  32. Obtuse
  33. 30
  34. 90
  35. 55
  36. 10
  37. 10
  38. 170
  39. 210
  40. 200

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