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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 849 · 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) Right (c) Acute
  2. 2.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  6. 6.An angle measures 40°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  7. 7.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 75° and 20°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  13. 13.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  14. 14.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 100° and 50°. What is the third angle (in degrees)?
  24. 24.An angle measures 25°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  25. 25.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  26. 26.An angle measures 145°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  27. 27.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 80° and 100°. What is the third angle (in degrees)?
  29. 29.An angle measures 160°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  30. 30.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  31. 31.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 50° and 110°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?

Answer key

  1. Right
  2. 170
  3. 30
  4. 150
  5. 30
  6. Acute
  7. 120
  8. 85
  9. 150
  10. 160
  11. 20
  12. 30
  13. Straight
  14. 10
  15. 40
  16. 50
  17. 55
  18. 85
  19. 150
  20. 170
  21. 110
  22. 125
  23. 30
  24. Acute
  25. 35
  26. Obtuse
  27. 85
  28. 180
  29. Obtuse
  30. Acute
  31. 130
  32. 60
  33. 150
  34. 20
  35. 130
  36. 5
  37. 100
  38. 70
  39. 50
  40. 70

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