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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 400 · 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.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  4. 4.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  10. 10.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  11. 11.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  14. 14.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 95° and 80°. What is the third angle (in degrees)?
  16. 16.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  17. 17.An angle measures 35°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  18. 18.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  20. 20.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  21. 21.Two angles of a triangle are 65° and 95°. What is the third angle (in degrees)?
  22. 22.An angle measures 95°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  23. 23.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  24. 24.An angle measures 100°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  25. 25.Two angles of a triangle are 80° and 80°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 35° and 90°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 95° and 50°. What is the third angle (in degrees)?
  31. 31.An angle measures 115°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  32. 32.An angle measures 40°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  33. 33.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 120° and 50°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 50° and 120°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 95° and 45°. What is the third angle (in degrees)?

Answer key

  1. 180
  2. 140
  3. Straight
  4. 150
  5. 95
  6. 60
  7. 230
  8. 65
  9. 90
  10. Acute
  11. 85
  12. 55
  13. Right
  14. 150
  15. 5
  16. Acute
  17. Acute
  18. 90
  19. 120
  20. Acute
  21. 20
  22. Obtuse
  23. 140
  24. Obtuse
  25. 20
  26. 100
  27. 45
  28. 55
  29. 55
  30. 35
  31. Obtuse
  32. Acute
  33. 70
  34. 190
  35. 210
  36. 25
  37. 75
  38. 130
  39. 190
  40. 40

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