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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 344 · 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 150°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  2. 2.Two angles together make a straight line. One of them is 115°. 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 of a triangle are 80° and 85°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 80° and 60°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  17. 17.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  18. 18.Two angles of a triangle are 90° and 70°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  23. 23.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  24. 24.Two angles of a triangle are 20° and 55°. What is the third angle (in degrees)?
  25. 25.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  26. 26.An angle measures 125°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  27. 27.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 25° and 95°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 55° and 45°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 55° and 80°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  36. 36.An angle measures 40°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  37. 37.Two angles of a triangle are 95° and 35°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 80° and 100°. What is the third angle (in degrees)?

Answer key

  1. Obtuse
  2. 65
  3. 75
  4. 15
  5. 30
  6. 145
  7. 150
  8. 200
  9. 100
  10. 40
  11. 30
  12. 70
  13. 120
  14. 80
  15. 60
  16. 45
  17. Straight
  18. 20
  19. 90
  20. 5
  21. 120
  22. 130
  23. Right
  24. 105
  25. Obtuse
  26. Obtuse
  27. 50
  28. 170
  29. 60
  30. 160
  31. 150
  32. 80
  33. 20
  34. 45
  35. 155
  36. Acute
  37. 50
  38. 110
  39. 30
  40. 180

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