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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 440 · 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.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  2. 2.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  3. 3.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  5. 5.Two angles of a triangle are 55° and 70°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  9. 9.An angle measures 70°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  10. 10.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 35° and 35°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 55° and 80°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 60° and 140°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 60° and 95°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 40° and 95°. What is the third angle (in degrees)?
  29. 29.An angle measures 115°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  30. 30.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  36. 36.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  37. 37.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  38. 38.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  39. 39.An angle measures 145°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  40. 40.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?

Answer key

  1. 95
  2. Straight
  3. 160
  4. 180
  5. 55
  6. 70
  7. 45
  8. 120
  9. Acute
  10. 160
  11. 70
  12. 40
  13. 30
  14. 45
  15. 110
  16. 145
  17. 45
  18. 90
  19. 160
  20. 150
  21. 60
  22. 130
  23. 65
  24. 25
  25. 30
  26. 20
  27. 140
  28. 45
  29. Obtuse
  30. 90
  31. 120
  32. 50
  33. 210
  34. 25
  35. 30
  36. Acute
  37. Acute
  38. 15
  39. Obtuse
  40. 60

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