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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 692 · 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.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  10. 10.An angle measures 110°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  11. 11.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  12. 12.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  13. 13.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 30° and 20°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  22. 22.An angle measures 135°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  23. 23.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 85° and 45°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  31. 31.An angle measures 140°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  32. 32.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  33. 33.An angle measures 30°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  34. 34.Two angles of a triangle are 25° and 40°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 100° and 60°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 90° and 40°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  39. 39.An angle measures 40°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  40. 40.Two angles of a triangle are 75° and 60°. What is the third angle (in degrees)?

Answer key

  1. 85
  2. 75
  3. 60
  4. 25
  5. 70
  6. 120
  7. 60
  8. 50
  9. 200
  10. Obtuse
  11. 40
  12. Right
  13. 80
  14. 85
  15. 60
  16. 60
  17. 120
  18. 50
  19. 30
  20. 130
  21. 65
  22. Obtuse
  23. 180
  24. 135
  25. 25
  26. 70
  27. 50
  28. 95
  29. 60
  30. 70
  31. Obtuse
  32. 180
  33. Acute
  34. 115
  35. 20
  36. 50
  37. 150
  38. 45
  39. Acute
  40. 45

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