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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 365 · 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 120°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  2. 2.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  4. 4.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  5. 5.An angle measures 65°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  6. 6.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  9. 9.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  10. 10.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 130° and 130°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 20° and 85°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 20° and 120°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  24. 24.Two angles of a triangle are 95° and 80°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  26. 26.An angle measures 135°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  27. 27.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 35° and 120°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  35. 35.An angle measures 85°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  36. 36.An angle measures 40°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  37. 37.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 20° and 20°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?

Answer key

  1. Obtuse
  2. 80
  3. 160
  4. Straight
  5. Acute
  6. 90
  7. 50
  8. 120
  9. Right
  10. 20
  11. 90
  12. 60
  13. 45
  14. 135
  15. 170
  16. 100
  17. 75
  18. 50
  19. 40
  20. 240
  21. 40
  22. 40
  23. 90
  24. 5
  25. 75
  26. Obtuse
  27. 180
  28. 25
  29. 75
  30. 30
  31. 210
  32. 120
  33. 20
  34. 150
  35. Acute
  36. Acute
  37. 30
  38. 45
  39. 140
  40. 130

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