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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 106 · 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 7 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  4. 4.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  6. 6.An angle measures 10°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  7. 7.An angle measures 150°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  8. 8.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  10. 10.An angle measures 95°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  11. 11.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 70° and 105°. What is the third angle (in degrees)?
  16. 16.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  17. 17.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  23. 23.Two angles of a triangle are 50° and 75°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  25. 25.An angle measures 115°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  26. 26.Two angles of a triangle are 40° and 120°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 95° and 30°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 50° and 70°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  32. 32.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  33. 33.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 60° and 25°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 70° and 100°. What is the third angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?

Answer key

  1. 150
  2. 30
  3. Right
  4. 90
  5. 200
  6. Acute
  7. Obtuse
  8. 140
  9. 65
  10. Obtuse
  11. 15
  12. 20
  13. 100
  14. 65
  15. 5
  16. Straight
  17. 75
  18. 70
  19. 115
  20. 35
  21. 110
  22. 180
  23. 55
  24. 150
  25. Obtuse
  26. 20
  27. 55
  28. 165
  29. 95
  30. 60
  31. 70
  32. Acute
  33. 85
  34. 120
  35. 150
  36. 90
  37. 95
  38. 25
  39. 10
  40. 30

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