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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 42 · 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.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  5. 5.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  6. 6.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  16. 16.An angle measures 145°. 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 60°. What is the other angle (in degrees)?
  18. 18.An angle measures 160°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  19. 19.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  23. 23.An angle measures 25°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  24. 24.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  25. 25.An angle measures 140°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  26. 26.An angle measures 30°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  27. 27.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  29. 29.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  30. 30.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  33. 33.Two angles of a triangle are 45° and 65°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 80° and 85°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?

Answer key

  1. 180
  2. 170
  3. 75
  4. 80
  5. Right
  6. 110
  7. 65
  8. 90
  9. 120
  10. 120
  11. 55
  12. 60
  13. 150
  14. 135
  15. 60
  16. Obtuse
  17. 30
  18. Obtuse
  19. 130
  20. 20
  21. 150
  22. 15
  23. Acute
  24. Acute
  25. Obtuse
  26. Acute
  27. 70
  28. 30
  29. Straight
  30. 15
  31. 110
  32. 30
  33. 70
  34. 45
  35. 15
  36. 140
  37. 160
  38. 120
  39. 90
  40. 150

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