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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 250 · 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.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  2. 2.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  3. 3.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  5. 5.An angle measures 170°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  6. 6.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 60° and 130°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  9. 9.An angle measures 155°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  10. 10.Three angles meet at a point. Two of them are 80° and 100°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  13. 13.An angle measures 80°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  14. 14.Two angles of a triangle are 75° and 85°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  16. 16.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  17. 17.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  18. 18.An angle measures 100°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  19. 19.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 55° and 25°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  24. 24.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  25. 25.Two angles of a triangle are 100° and 25°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 90° and 85°. What is the third angle (in degrees)?
  32. 32.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  33. 33.An angle measures 25°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  34. 34.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  35. 35.An angle measures 95°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  36. 36.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 65° and 35°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?

Answer key

  1. Right
  2. Acute
  3. 50
  4. 70
  5. Obtuse
  6. 65
  7. 170
  8. 150
  9. Obtuse
  10. 180
  11. 30
  12. 180
  13. Acute
  14. 20
  15. 25
  16. Straight
  17. 85
  18. Obtuse
  19. 160
  20. 15
  21. 100
  22. 140
  23. 40
  24. Acute
  25. 55
  26. 150
  27. 90
  28. 50
  29. 30
  30. 110
  31. 5
  32. Acute
  33. Acute
  34. 80
  35. Obtuse
  36. 155
  37. 60
  38. 160
  39. 80
  40. 30

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