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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 127 · 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 8 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 75° and 75°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  14. 14.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 180°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 40° and 60°. What is the third angle (in degrees)?
  24. 24.An angle measures 40°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  25. 25.An angle measures 65°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  26. 26.Two angles of a triangle are 80° and 45°. What is the third angle (in degrees)?
  27. 27.An angle measures 75°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  28. 28.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  33. 33.An angle measures 20°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  34. 34.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  35. 35.An angle measures 50°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  36. 36.Two angles of a triangle are 25° and 40°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  39. 39.An angle measures 70°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  40. 40.Three angles meet at a point. Two of them are 130° and 60°. What is the third angle (in degrees)?

Answer key

  1. 120
  2. 140
  3. 115
  4. 155
  5. 30
  6. 65
  7. 5
  8. 90
  9. 110
  10. 150
  11. 60
  12. 85
  13. Right
  14. 150
  15. 30
  16. 35
  17. 110
  18. 120
  19. 80
  20. 120
  21. 45
  22. 50
  23. 80
  24. Acute
  25. Acute
  26. 55
  27. Acute
  28. 65
  29. 145
  30. 30
  31. 100
  32. 135
  33. Acute
  34. 10
  35. Acute
  36. 115
  37. 90
  38. 45
  39. Acute
  40. 170

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