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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 260 · 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 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  2. 2.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  5. 5.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  6. 6.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  9. 9.An angle measures 30°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  10. 10.An angle measures 15°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  11. 11.Three angles meet at a point. Two of them are 80° and 200°. What is the third angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  13. 13.Two angles of a triangle are 100° and 45°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 50° and 105°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 45° and 75°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  24. 24.An angle measures 50°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  25. 25.Two angles of a triangle are 30° and 120°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 25° and 50°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 35° and 125°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  38. 38.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  39. 39.Two angles of a triangle are 35° and 105°. What is the third angle (in degrees)?
  40. 40.An angle measures 170°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right

Answer key

  1. Right
  2. 85
  3. 80
  4. 30
  5. Straight
  6. 40
  7. 60
  8. 60
  9. Acute
  10. Acute
  11. 80
  12. 150
  13. 35
  14. 55
  15. 135
  16. 180
  17. 90
  18. 150
  19. 70
  20. 25
  21. 120
  22. 60
  23. 110
  24. Acute
  25. 30
  26. 120
  27. 150
  28. 105
  29. 150
  30. 120
  31. 80
  32. 40
  33. 60
  34. 150
  35. 15
  36. 20
  37. 170
  38. Obtuse
  39. 40
  40. Obtuse

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