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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 528 · 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 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  2. 2.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  3. 3.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 55° and 95°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 100° and 60°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  16. 16.An angle measures 130°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  17. 17.An angle measures 55°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  18. 18.Two angles of a triangle are 55° and 40°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 50° and 55°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  28. 28.An angle measures 75°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  29. 29.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 25° and 115°. What is the third angle (in degrees)?
  33. 33.An angle measures 110°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  34. 34.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 70° and 50°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?

Answer key

  1. Straight
  2. Right
  3. 150
  4. 25
  5. 30
  6. 85
  7. 60
  8. 5
  9. 35
  10. 90
  11. 110
  12. 90
  13. 120
  14. 20
  15. 60
  16. Obtuse
  17. Acute
  18. 85
  19. 35
  20. 160
  21. 75
  22. 20
  23. 30
  24. 130
  25. 15
  26. 130
  27. 30
  28. Acute
  29. 80
  30. 70
  31. 45
  32. 40
  33. Obtuse
  34. 80
  35. 60
  36. 80
  37. 80
  38. 70
  39. 60
  40. 120

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