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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 941 · 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 11 o'clock (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  3. 3.An angle measures 135°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  4. 4.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  9. 9.An angle measures 165°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  10. 10.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  18. 18.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  19. 19.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  21. 21.An angle measures 80°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  22. 22.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  23. 23.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  24. 24.An angle measures 70°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  25. 25.Two angles of a triangle are 25° and 105°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 75° and 55°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  29. 29.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  30. 30.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  31. 31.Two angles of a triangle are 50° and 50°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  33. 33.Two angles of a triangle are 40° and 90°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 100° and 30°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?

Answer key

  1. 30
  2. 30
  3. Obtuse
  4. 50
  5. 10
  6. 65
  7. 60
  8. 110
  9. Obtuse
  10. 70
  11. 30
  12. 120
  13. 80
  14. 55
  15. 90
  16. 130
  17. 160
  18. Straight
  19. 80
  20. 65
  21. Acute
  22. 180
  23. Right
  24. Acute
  25. 50
  26. 125
  27. 50
  28. 35
  29. Obtuse
  30. Acute
  31. 80
  32. 120
  33. 50
  34. 55
  35. 200
  36. 50
  37. 80
  38. 35
  39. 30
  40. 110

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