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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 146 · 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 6 o'clock (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 5°. 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.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?
  5. 5.An angle measures 150°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  6. 6.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  7. 7.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 45° and 80°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  14. 14.An angle measures 85°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  15. 15.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 65° and 50°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  29. 29.An angle measures 30°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  30. 30.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 80° and 210°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 70° and 95°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?

Answer key

  1. 180
  2. 85
  3. 80
  4. 120
  5. Obtuse
  6. Right
  7. 65
  8. 55
  9. 110
  10. 5
  11. 20
  12. 25
  13. 100
  14. Acute
  15. 50
  16. 50
  17. 135
  18. 190
  19. 45
  20. 30
  21. 40
  22. 10
  23. 30
  24. 110
  25. 115
  26. 65
  27. 210
  28. 130
  29. Acute
  30. 10
  31. 70
  32. 30
  33. 150
  34. 90
  35. 65
  36. 120
  37. 230
  38. 90
  39. 15
  40. 20

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