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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 616 · 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 3 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  6. 6.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  7. 7.An angle measures 60°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  8. 8.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 45°. 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.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  17. 17.An angle measures 125°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  18. 18.Three angles meet at a point. Two of them are 70° and 170°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  21. 21.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  22. 22.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 40° and 85°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 60° and 30°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  29. 29.An angle measures 65°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  30. 30.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 25° and 150°. What is the third angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  36. 36.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  37. 37.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?

Answer key

  1. 90
  2. 180
  3. 210
  4. 75
  5. 70
  6. Acute
  7. Acute
  8. 15
  9. 155
  10. 90
  11. 140
  12. 135
  13. 150
  14. 120
  15. 20
  16. 165
  17. Obtuse
  18. 120
  19. 110
  20. 50
  21. Right
  22. 10
  23. 85
  24. 60
  25. 55
  26. 90
  27. 110
  28. 190
  29. Acute
  30. 120
  31. 160
  32. 5
  33. 30
  34. 45
  35. 80
  36. Straight
  37. 10
  38. 35
  39. 60
  40. 110

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