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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 304 · 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.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  4. 4.Two angles of a triangle are 20° and 140°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 65° and 40°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 55° and 25°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 80° and 90°. What is the third angle (in degrees)?
  9. 9.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  10. 10.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  12. 12.Two angles of a triangle are 70° and 30°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 80° and 85°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  16. 16.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 30° and 55°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  22. 22.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  23. 23.Two angles of a triangle are 55° and 120°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 90° and 100°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 100° and 130°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 70° and 55°. What is the third angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 40°. 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 together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 30° and 70°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  36. 36.An angle measures 130°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  37. 37.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?

Answer key

  1. 60
  2. 5
  3. 80
  4. 20
  5. 75
  6. 100
  7. 140
  8. 10
  9. Right
  10. 45
  11. 230
  12. 80
  13. 15
  14. 40
  15. 180
  16. 65
  17. 95
  18. 190
  19. 40
  20. 90
  21. Straight
  22. Obtuse
  23. 5
  24. 170
  25. 130
  26. 55
  27. 50
  28. 170
  29. 100
  30. 25
  31. 85
  32. 75
  33. 55
  34. 80
  35. 75
  36. Obtuse
  37. 90
  38. 120
  39. 120
  40. 60

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