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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 480 · 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 165°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  2. 2.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  4. 4.An angle measures 40°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  5. 5.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 80° and 150°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  12. 12.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  13. 13.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  14. 14.An angle measures 135°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  15. 15.An angle measures 15°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  16. 16.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  17. 17.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 90° and 140°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 55° and 35°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  25. 25.An angle measures 130°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  26. 26.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  27. 27.An angle measures 95°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  28. 28.Two angles of a triangle are 20° and 20°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 40° and 40°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 65° and 40°. What is the third angle (in degrees)?
  40. 40.An angle measures 145°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight

Answer key

  1. Obtuse
  2. 25
  3. 140
  4. Acute
  5. 125
  6. 70
  7. 45
  8. 60
  9. 90
  10. 130
  11. 150
  12. Right
  13. 15
  14. Obtuse
  15. Acute
  16. Straight
  17. 210
  18. 80
  19. 180
  20. 130
  21. 90
  22. 75
  23. 90
  24. 170
  25. Obtuse
  26. 45
  27. Obtuse
  28. 140
  29. 60
  30. 120
  31. 120
  32. 30
  33. 100
  34. 65
  35. 60
  36. 100
  37. 165
  38. 110
  39. 75
  40. Obtuse

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