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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 931 · 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 10 o'clock (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  3. 3.An angle measures 85°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  4. 4.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  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 9 o'clock (in degrees)?
  8. 8.Two angles of a triangle are 55° and 85°. What is the third angle (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  10. 10.An angle measures 40°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  11. 11.An angle measures 170°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  12. 12.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 75° and 85°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 45° and 45°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 95° and 65°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 45° and 130°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 50° and 100°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  23. 23.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  24. 24.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 20° and 125°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 20° and 50°. What is the third angle (in degrees)?
  31. 31.An angle measures 160°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  32. 32.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  37. 37.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  38. 38.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 70° and 40°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. 70
  3. Acute
  4. 105
  5. 150
  6. 40
  7. 90
  8. 40
  9. Straight
  10. Acute
  11. Obtuse
  12. 30
  13. 50
  14. 160
  15. 20
  16. 90
  17. 20
  18. 60
  19. 5
  20. 65
  21. 30
  22. 55
  23. Right
  24. 115
  25. 35
  26. 30
  27. 200
  28. 180
  29. 140
  30. 110
  31. Obtuse
  32. 35
  33. 150
  34. 120
  35. 170
  36. 15
  37. Obtuse
  38. 65
  39. 135
  40. 70

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