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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 159 · 40 sums
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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 4 o'clock (in degrees)?
  2. 2.An angle measures 60°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  3. 3.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  6. 6.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  7. 7.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  9. 9.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  11. 11.Two angles of a triangle are 95° and 35°. What is the third 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 120°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  14. 14.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 100° and 170°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  18. 18.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  19. 19.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 100° and 140°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 110° and 180°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 50° and 110°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 50° and 95°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 60° and 20°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  33. 33.An angle measures 130°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  34. 34.Two angles of a triangle are 30° and 70°. What is the third angle (in degrees)?
  35. 35.An angle measures 145°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  36. 36.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 95° and 70°. What is the third angle (in degrees)?
  39. 39.An angle measures 75°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  40. 40.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?

Answer key

  1. 120
  2. Acute
  3. 40
  4. 35
  5. 70
  6. Right
  7. 210
  8. 60
  9. 30
  10. 160
  11. 50
  12. 30
  13. Obtuse
  14. 160
  15. 90
  16. 60
  17. 160
  18. Obtuse
  19. 220
  20. 120
  21. 120
  22. 60
  23. 70
  24. 140
  25. 20
  26. 35
  27. 150
  28. 110
  29. 100
  30. 150
  31. 165
  32. 85
  33. Obtuse
  34. 80
  35. Obtuse
  36. 150
  37. 130
  38. 15
  39. Acute
  40. 100

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