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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 601 · 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.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  8. 8.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 100° and 140°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 50° and 20°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 45° and 125°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  19. 19.An angle measures 30°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  20. 20.Two angles of a triangle are 60° and 40°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 85° and 45°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  26. 26.Two angles of a triangle are 30° and 120°. What is the third angle (in degrees)?
  27. 27.An angle measures 85°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  28. 28.An angle measures 165°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  29. 29.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  32. 32.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  33. 33.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  35. 35.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 25° and 25°. What is the third angle (in degrees)?
  38. 38.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  39. 39.Three angles meet at a point. Two of them are 90° and 100°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?

Answer key

  1. 170
  2. 25
  3. 60
  4. 30
  5. 50
  6. 80
  7. Straight
  8. 65
  9. 165
  10. 120
  11. 120
  12. 110
  13. 10
  14. 30
  15. 140
  16. 70
  17. 15
  18. 90
  19. Acute
  20. 80
  21. 60
  22. 30
  23. 80
  24. 50
  25. 150
  26. 30
  27. Acute
  28. Obtuse
  29. 85
  30. 200
  31. 60
  32. Right
  33. 15
  34. 120
  35. 35
  36. 150
  37. 130
  38. Acute
  39. 170
  40. 135

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