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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 438 · 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 5 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  5. 5.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  8. 8.Two angles of a triangle are 70° and 80°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  12. 12.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 70° and 170°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  15. 15.An angle measures 135°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  16. 16.An angle measures 95°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  17. 17.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  19. 19.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  20. 20.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 85° and 70°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 75° and 45°. What is the third angle (in degrees)?
  24. 24.An angle measures 65°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  25. 25.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 140° and 60°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 50° and 50°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  32. 32.An angle measures 40°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  33. 33.Two angles of a triangle are 35° and 100°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  35. 35.An angle measures 175°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  36. 36.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 75° and 65°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?

Answer key

  1. 150
  2. 170
  3. 50
  4. Right
  5. 60
  6. 80
  7. 90
  8. 30
  9. 120
  10. 30
  11. 30
  12. 115
  13. 120
  14. 75
  15. Obtuse
  16. Obtuse
  17. 70
  18. 70
  19. Straight
  20. 20
  21. 25
  22. 5
  23. 60
  24. Acute
  25. 180
  26. 160
  27. 135
  28. 90
  29. 80
  30. 80
  31. 85
  32. Acute
  33. 45
  34. 50
  35. Obtuse
  36. 150
  37. 10
  38. 40
  39. 110
  40. 80

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