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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 706 · 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 75°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  2. 2.An angle measures 130°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  3. 3.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  4. 4.An angle measures 110°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  5. 5.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  6. 6.Two angles of a triangle are 80° and 45°. What is the third 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 of a triangle are 45° and 60°. What is the third angle (in degrees)?
  9. 9.An angle measures 40°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  10. 10.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  13. 13.An angle measures 60°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  14. 14.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 30° and 40°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 80° and 55°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 45° and 70°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 85° and 75°. What is the third angle (in degrees)?
  23. 23.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  24. 24.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  26. 26.An angle measures 25°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  27. 27.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 100° and 140°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  31. 31.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  32. 32.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  34. 34.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  35. 35.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  37. 37.Two angles of a triangle are 60° and 80°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?

Answer key

  1. Acute
  2. Obtuse
  3. 130
  4. Obtuse
  5. Acute
  6. 55
  7. 60
  8. 75
  9. Acute
  10. 100
  11. 150
  12. 20
  13. Acute
  14. 135
  15. 30
  16. 110
  17. 45
  18. 30
  19. 90
  20. 150
  21. 65
  22. 20
  23. Straight
  24. 30
  25. 45
  26. Acute
  27. 100
  28. 210
  29. 120
  30. 145
  31. Right
  32. 90
  33. 120
  34. Acute
  35. 55
  36. 150
  37. 40
  38. 105
  39. 60
  40. 110

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