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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 919 · 40 sums
TalentJR

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.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  2. 2.An angle measures 120°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  3. 3.Two angles of a triangle are 40° and 120°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  7. 7.An angle measures 130°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  8. 8.An angle measures 135°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  9. 9.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 65° and 40°. What is the third angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  14. 14.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  15. 15.An angle measures 15°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  16. 16.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 30° and 105°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 65° and 25°. What is the third angle (in degrees)?
  25. 25.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  26. 26.Two angles of a triangle are 55° and 45°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 110° and 160°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 80° and 20°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  34. 34.An angle measures 75°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  35. 35.An angle measures 40°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  36. 36.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  38. 38.An angle measures 95°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  39. 39.Two angles of a triangle are 70° and 105°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 90° and 55°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. Obtuse
  3. 20
  4. 85
  5. 30
  6. 145
  7. Obtuse
  8. Obtuse
  9. 100
  10. 130
  11. 50
  12. 75
  13. Right
  14. 60
  15. Acute
  16. 40
  17. 190
  18. 15
  19. 70
  20. 45
  21. 90
  22. 125
  23. 110
  24. 90
  25. Straight
  26. 80
  27. 155
  28. 90
  29. 80
  30. 80
  31. 120
  32. 5
  33. 120
  34. Acute
  35. Acute
  36. 80
  37. 120
  38. Obtuse
  39. 5
  40. 35

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