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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 524 · 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.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  2. 2.Two angles of a triangle are 35° and 50°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  5. 5.An angle measures 25°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  6. 6.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  7. 7.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 95° and 55°. What is the third angle (in degrees)?
  20. 20.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  21. 21.Two angles of a triangle are 55° and 40°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 20° and 85°. What is the third angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  29. 29.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  30. 30.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 25° and 30°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 100° and 25°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  36. 36.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  37. 37.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?

Answer key

  1. Right
  2. 95
  3. 100
  4. 120
  5. Acute
  6. Acute
  7. 190
  8. 130
  9. 30
  10. 30
  11. 150
  12. 150
  13. 180
  14. 140
  15. 160
  16. 5
  17. 60
  18. 55
  19. 30
  20. Obtuse
  21. 85
  22. 15
  23. 40
  24. 65
  25. 170
  26. 75
  27. 30
  28. 210
  29. Straight
  30. 140
  31. 90
  32. 125
  33. 210
  34. 55
  35. 45
  36. Acute
  37. 110
  38. 35
  39. 85
  40. 190

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