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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 391 · 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 135°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  2. 2.Two angles together make a straight line. One of them is 120°. 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 60°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 65° and 50°. What is the third angle (in degrees)?
  8. 8.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  9. 9.An angle measures 115°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  10. 10.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  12. 12.Two angles of a triangle are 35° and 135°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  17. 17.Two angles of a triangle are 30° and 45°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 85° and 40°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 60° and 180°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 25° and 30°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 150° and 110°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  34. 34.An angle measures 40°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  35. 35.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 60° and 90°. What is the third angle (in degrees)?
  37. 37.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  38. 38.Two angles of a triangle are 95° and 40°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 50° and 70°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?

Answer key

  1. Obtuse
  2. 60
  3. 80
  4. 220
  5. 55
  6. 85
  7. 65
  8. Right
  9. Obtuse
  10. 90
  11. 60
  12. 10
  13. 190
  14. 100
  15. 65
  16. 90
  17. 105
  18. 130
  19. 120
  20. 65
  21. 60
  22. 55
  23. 240
  24. 120
  25. 130
  26. 50
  27. 125
  28. 115
  29. 30
  30. 100
  31. 10
  32. 170
  33. 75
  34. Acute
  35. 45
  36. 30
  37. Straight
  38. 45
  39. 60
  40. 70

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