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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 738 · 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 15°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  2. 2.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  4. 4.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  6. 6.Two angles of a triangle are 90° and 60°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 35° and 30°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  11. 11.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  12. 12.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 100° and 30°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 55° and 75°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 30° and 120°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 130° and 60°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  34. 34.An angle measures 75°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  35. 35.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  37. 37.An angle measures 150°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  38. 38.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  39. 39.An angle measures 100°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  40. 40.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?

Answer key

  1. Acute
  2. 90
  3. Right
  4. 60
  5. 150
  6. 30
  7. 115
  8. 150
  9. 65
  10. 190
  11. Straight
  12. 180
  13. 60
  14. 55
  15. 50
  16. 10
  17. 110
  18. 50
  19. 100
  20. 10
  21. 30
  22. 85
  23. 90
  24. 140
  25. 30
  26. 115
  27. 250
  28. 35
  29. 120
  30. 50
  31. 170
  32. 180
  33. 240
  34. Acute
  35. 60
  36. 70
  37. Obtuse
  38. 65
  39. Obtuse
  40. 120

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