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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 513 · 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 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.An angle measures 115°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  4. 4.Two angles of a triangle are 25° and 110°. What is the third angle (in degrees)?
  5. 5.An angle measures 110°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  6. 6.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 40° and 120°. What is the third angle (in degrees)?
  11. 11.An angle measures 150°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  12. 12.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 85° and 80°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 80° and 70°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 110° and 90°. What is the third angle (in degrees)?
  27. 27.An angle measures 60°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  28. 28.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  29. 29.An angle measures 20°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  30. 30.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 45° and 65°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 50° and 170°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?

Answer key

  1. Right
  2. 30
  3. Obtuse
  4. 45
  5. Obtuse
  6. 115
  7. 180
  8. 80
  9. 90
  10. 20
  11. Obtuse
  12. 85
  13. 15
  14. 15
  15. 170
  16. 160
  17. 190
  18. 90
  19. 210
  20. 25
  21. 65
  22. 160
  23. 190
  24. 165
  25. 40
  26. 160
  27. Acute
  28. 45
  29. Acute
  30. 155
  31. 55
  32. 60
  33. 190
  34. 30
  35. 70
  36. 110
  37. 100
  38. 130
  39. 140
  40. 60

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