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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 203 · 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 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  2. 2.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  12. 12.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  13. 13.An angle measures 95°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  14. 14.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 150° and 100°. 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.Three angles meet at a point. Two of them are 70° and 190°. 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.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  20. 20.An angle measures 85°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  21. 21.Two angles of a triangle are 95° and 80°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  23. 23.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  24. 24.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 45° and 25°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 95° and 75°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 60° and 40°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 25° and 120°. What is the third angle (in degrees)?
  30. 30.An angle measures 170°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  31. 31.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 40° and 105°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?

Answer key

  1. Straight
  2. 70
  3. 240
  4. 120
  5. 170
  6. 190
  7. 85
  8. 15
  9. 25
  10. 40
  11. 30
  12. Acute
  13. Obtuse
  14. 150
  15. 110
  16. 60
  17. 100
  18. 90
  19. 35
  20. Acute
  21. 5
  22. 190
  23. Right
  24. 80
  25. 110
  26. 190
  27. 10
  28. 80
  29. 35
  30. Obtuse
  31. 20
  32. 70
  33. 35
  34. 110
  35. 30
  36. 120
  37. 190
  38. 85
  39. 95
  40. 190

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