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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 505 · 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 95°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  5. 5.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  6. 6.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  7. 7.Two angles of a triangle are 25° and 125°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 20° and 100°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 100° and 40°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 50° and 35°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  14. 14.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  15. 15.Two angles of a triangle are 20° and 25°. What is the third angle (in degrees)?
  16. 16.An angle measures 100°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  17. 17.An angle measures 75°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  18. 18.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  22. 22.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  23. 23.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 100° and 110°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 90° and 50°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  40. 40.An angle measures 65°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse

Answer key

  1. 85
  2. 60
  3. 70
  4. Right
  5. Acute
  6. 180
  7. 30
  8. 60
  9. 40
  10. 95
  11. 150
  12. 30
  13. 100
  14. Obtuse
  15. 135
  16. Obtuse
  17. Acute
  18. 90
  19. 120
  20. 70
  21. 80
  22. Straight
  23. 165
  24. 150
  25. 80
  26. 130
  27. 200
  28. 30
  29. 120
  30. 115
  31. 160
  32. 75
  33. 65
  34. 40
  35. 220
  36. 170
  37. 85
  38. 30
  39. 90
  40. Acute

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