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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 177 · 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 80° and 80°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  11. 11.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  12. 12.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  13. 13.An angle measures 95°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  14. 14.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 70° and 100°. What is the third angle (in degrees)?
  16. 16.An angle measures 30°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  17. 17.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 65° and 30°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 60° and 45°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  22. 22.An angle measures 170°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  23. 23.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 5°. 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.Three angles meet at a point. Two of them are 110° and 160°. 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.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  30. 30.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  31. 31.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (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 110° and 170°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  36. 36.An angle measures 75°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  37. 37.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?

Answer key

  1. 200
  2. 120
  3. 75
  4. 70
  5. 60
  6. 85
  7. 65
  8. 80
  9. 90
  10. 70
  11. Right
  12. 110
  13. Obtuse
  14. 165
  15. 10
  16. Acute
  17. 85
  18. 170
  19. 85
  20. 75
  21. 150
  22. Obtuse
  23. 20
  24. 85
  25. 25
  26. 90
  27. 150
  28. 30
  29. 35
  30. Straight
  31. 60
  32. 180
  33. 120
  34. 80
  35. 75
  36. Acute
  37. 60
  38. 80
  39. 55
  40. 155

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