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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 62 · 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.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  2. 2.An angle measures 40°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  3. 3.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  5. 5.Two angles of a triangle are 45° and 40°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 210°. 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.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  11. 11.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  12. 12.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  13. 13.Two angles of a triangle are 20° and 155°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  15. 15.An angle measures 80°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  16. 16.Two angles of a triangle are 60° and 100°. What is the third angle (in degrees)?
  17. 17.An angle measures 110°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  18. 18.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 35° and 70°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  29. 29.An angle measures 85°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  30. 30.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  32. 32.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  33. 33.Two angles of a triangle are 55° and 60°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 130°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?

Answer key

  1. 40
  2. Acute
  3. 30
  4. 120
  5. 95
  6. 80
  7. 60
  8. 30
  9. 25
  10. 80
  11. Right
  12. Straight
  13. 5
  14. 45
  15. Acute
  16. 20
  17. Obtuse
  18. 90
  19. 170
  20. 75
  21. 130
  22. 60
  23. 120
  24. 150
  25. 75
  26. 140
  27. 70
  28. 170
  29. Acute
  30. 40
  31. 150
  32. Obtuse
  33. 65
  34. 135
  35. 50
  36. 110
  37. 90
  38. 170
  39. 90
  40. 165

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