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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 486 · 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 2 o'clock (in degrees)?
  2. 2.Two angles of a triangle are 70° and 75°. What is the third angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  4. 4.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  5. 5.Two angles of a triangle are 50° and 60°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 65° and 65°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  17. 17.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  18. 18.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 55° and 30°. What is the third angle (in degrees)?
  25. 25.An angle measures 30°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  26. 26.Two angles of a triangle are 75° and 35°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  31. 31.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  32. 32.Two angles of a triangle are 70° and 20°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 35° and 70°. What is the third angle (in degrees)?
  35. 35.An angle measures 135°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  36. 36.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 35°. 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 160°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. 35
  3. Right
  4. Straight
  5. 70
  6. 240
  7. 170
  8. 50
  9. 10
  10. 30
  11. 15
  12. 210
  13. 90
  14. 35
  15. 65
  16. 25
  17. Acute
  18. 180
  19. 165
  20. 170
  21. 120
  22. 20
  23. 130
  24. 95
  25. Acute
  26. 70
  27. 150
  28. 30
  29. 85
  30. 70
  31. Obtuse
  32. 90
  33. 40
  34. 75
  35. Obtuse
  36. 60
  37. 145
  38. 120
  39. 20
  40. 200

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