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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 552 · 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 135°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  2. 2.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  3. 3.Two angles of a triangle are 60° and 95°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?
  5. 5.An angle measures 115°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  6. 6.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 35° and 130°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  11. 11.An angle measures 160°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  12. 12.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 70° and 100°. What is the third angle (in degrees)?
  16. 16.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  17. 17.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  18. 18.Two angles of a triangle are 25° and 135°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 25° and 95°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 85° and 90°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  26. 26.An angle measures 145°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  27. 27.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  28. 28.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  29. 29.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  34. 34.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  35. 35.An angle measures 170°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  36. 36.A right angle is split into two angles. 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 15°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?

Answer key

  1. Obtuse
  2. 90
  3. 25
  4. 120
  5. Obtuse
  6. 80
  7. 120
  8. 65
  9. 15
  10. 60
  11. Obtuse
  12. 115
  13. 150
  14. 75
  15. 10
  16. Straight
  17. Right
  18. 20
  19. 30
  20. 150
  21. 60
  22. 35
  23. 5
  24. 30
  25. 60
  26. Obtuse
  27. 65
  28. Acute
  29. 95
  30. 180
  31. 120
  32. 150
  33. 30
  34. 35
  35. Obtuse
  36. 80
  37. 75
  38. 35
  39. 110
  40. 90

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