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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 867 · 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 65°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  2. 2.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 60° and 70°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 90° and 170°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  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 5 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  13. 13.An angle measures 20°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  14. 14.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 50° and 150°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  18. 18.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  19. 19.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  20. 20.An angle measures 30°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  21. 21.Two angles of a triangle are 45° and 95°. What is the third angle (in degrees)?
  22. 22.An angle measures 55°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  23. 23.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  26. 26.Two angles of a triangle are 35° and 140°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 25° and 85°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  31. 31.An angle measures 25°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  32. 32.An angle measures 170°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  33. 33.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 20° and 70°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 70° and 40°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 55° and 25°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 65° and 95°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 30°. What is the other 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.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse

Answer key

  1. Acute
  2. 105
  3. 160
  4. 100
  5. 50
  6. 25
  7. 100
  8. 70
  9. 35
  10. 90
  11. 150
  12. 80
  13. Acute
  14. 90
  15. 160
  16. 60
  17. 115
  18. Obtuse
  19. 90
  20. Acute
  21. 40
  22. Acute
  23. 30
  24. 15
  25. 60
  26. 5
  27. 70
  28. 80
  29. 40
  30. 30
  31. Acute
  32. Obtuse
  33. 50
  34. 90
  35. 70
  36. 100
  37. 20
  38. 150
  39. 55
  40. Straight

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