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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 892 · 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.Two angles of a triangle are 70° and 80°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  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 9 o'clock (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  7. 7.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  10. 10.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  11. 11.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  12. 12.An angle measures 155°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  13. 13.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  17. 17.An angle measures 110°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  18. 18.Three angles meet at a point. Two of them are 60° and 150°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  20. 20.An angle measures 80°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  21. 21.Two angles of a triangle are 45° and 105°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 25° and 120°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  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 100°. What is the other angle (in degrees)?
  32. 32.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  33. 33.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 25° and 110°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  38. 38.An angle measures 65°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  39. 39.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 20° and 130°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 170
  3. 60
  4. 80
  5. 90
  6. Straight
  7. 60
  8. 45
  9. 15
  10. Right
  11. 120
  12. Obtuse
  13. 35
  14. 55
  15. 90
  16. 20
  17. Obtuse
  18. 150
  19. 75
  20. Acute
  21. 30
  22. 95
  23. 20
  24. 35
  25. 30
  26. 50
  27. 180
  28. 150
  29. 5
  30. 90
  31. 80
  32. Acute
  33. 10
  34. 45
  35. 45
  36. 180
  37. 40
  38. Acute
  39. 85
  40. 30

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