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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 65 · 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 85°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.Two angles of a triangle are 25° and 115°. What is the third angle (in degrees)?
  4. 4.An angle measures 45°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  5. 5.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  6. 6.Two angles of a triangle are 65° and 35°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  10. 10.Two angles of a triangle are 70° and 45°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  14. 14.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  15. 15.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 110° and 90°. What is the third 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 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  22. 22.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 60° and 70°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 40° and 115°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 30° and 20°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 75° and 65°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  36. 36.Two angles of a triangle are 80° and 60°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 60° and 80°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?

Answer key

  1. Acute
  2. 60
  3. 40
  4. Acute
  5. Straight
  6. 80
  7. 15
  8. 60
  9. 30
  10. 65
  11. 55
  12. 35
  13. 150
  14. Obtuse
  15. 140
  16. 240
  17. 140
  18. 15
  19. 160
  20. 90
  21. Right
  22. 60
  23. 50
  24. 165
  25. 25
  26. 95
  27. 130
  28. 40
  29. 55
  30. 65
  31. 80
  32. 120
  33. 120
  34. 120
  35. 150
  36. 40
  37. 5
  38. 130
  39. 40
  40. 105

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