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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 50 · 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) Right (b) Straight (c) Acute
  2. 2.An angle measures 135°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  3. 3.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  4. 4.Two angles of a triangle are 100° and 50°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 80° and 210°. What is the third angle (in degrees)?
  7. 7.An angle measures 65°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  8. 8.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  10. 10.An angle measures 55°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  11. 11.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  12. 12.An angle measures 120°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  13. 13.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 30° and 40°. What is the third 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.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  23. 23.Two angles of a triangle are 40° and 95°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 100° and 70°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  32. 32.An angle measures 75°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  33. 33.Two angles of a triangle are 80° and 60°. What is the third angle (in degrees)?
  34. 34.An angle measures 30°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  35. 35.An angle measures 10°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  36. 36.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 110° and 110°. What is the third angle (in degrees)?
  39. 39.An angle measures 50°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  40. 40.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?

Answer key

  1. Straight
  2. Obtuse
  3. 55
  4. 30
  5. 15
  6. 70
  7. Acute
  8. 90
  9. 75
  10. Acute
  11. Right
  12. Obtuse
  13. 70
  14. 60
  15. 110
  16. 35
  17. 95
  18. 110
  19. 55
  20. 130
  21. 60
  22. 60
  23. 45
  24. 60
  25. 35
  26. 80
  27. 80
  28. 90
  29. 10
  30. 170
  31. 70
  32. Acute
  33. 40
  34. Acute
  35. Acute
  36. 155
  37. 110
  38. 140
  39. Acute
  40. 100

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