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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 461 · 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.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  4. 4.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  7. 7.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 35° and 80°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  17. 17.An angle measures 75°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  18. 18.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  24. 24.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  25. 25.Two angles of a triangle are 80° and 70°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 110° and 110°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 90° and 110°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?

Answer key

  1. 55
  2. 70
  3. Right
  4. 80
  5. 30
  6. Straight
  7. 60
  8. 170
  9. 75
  10. 65
  11. 5
  12. 15
  13. 70
  14. 65
  15. 20
  16. 35
  17. Acute
  18. 160
  19. 160
  20. 170
  21. 125
  22. 55
  23. 120
  24. Acute
  25. 30
  26. 85
  27. 150
  28. 50
  29. 65
  30. 140
  31. 45
  32. 60
  33. 165
  34. 115
  35. 90
  36. 90
  37. 140
  38. 30
  39. 160
  40. 85

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