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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 52 · 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 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  2. 2.Two angles of a triangle are 85° and 30°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 70° and 65°. What is the third angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  8. 8.Two angles of a triangle are 75° and 40°. What is the third angle (in degrees)?
  9. 9.An angle measures 145°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  10. 10.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  13. 13.Two angles of a triangle are 30° and 100°. What is the third angle (in degrees)?
  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 together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 100° and 40°. What is the third angle (in degrees)?
  25. 25.An angle measures 70°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  26. 26.Three angles meet at a point. Two of them are 90° and 110°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 50° and 60°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 60° and 115°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 55° and 110°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?

Answer key

  1. Right
  2. 65
  3. 150
  4. 10
  5. 70
  6. 45
  7. 30
  8. 65
  9. Obtuse
  10. 110
  11. 150
  12. 30
  13. 50
  14. 165
  15. 155
  16. 110
  17. 85
  18. 90
  19. 95
  20. 30
  21. 160
  22. 110
  23. 210
  24. 40
  25. Acute
  26. 160
  27. 110
  28. 250
  29. 25
  30. 5
  31. 140
  32. 30
  33. 70
  34. 90
  35. 100
  36. 100
  37. 150
  38. 15
  39. 150
  40. 120

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