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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 474 · 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 11 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  3. 3.An angle measures 15°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  4. 4.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  7. 7.Two angles of a triangle are 50° and 95°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 75° and 40°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  15. 15.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  16. 16.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  17. 17.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  18. 18.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  23. 23.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  24. 24.Two angles of a triangle are 95° and 30°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 100° and 55°. What is the third angle (in degrees)?
  26. 26.An angle measures 10°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  27. 27.An angle measures 130°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  28. 28.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 140° and 60°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 65° and 70°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 100° and 170°. What is the third angle (in degrees)?
  35. 35.An angle measures 95°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  36. 36.Two angles of a triangle are 30° and 20°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  39. 39.An angle measures 140°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  40. 40.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?

Answer key

  1. 30
  2. 150
  3. Acute
  4. 30
  5. 90
  6. 120
  7. 35
  8. 20
  9. 165
  10. 65
  11. 60
  12. 10
  13. 90
  14. 65
  15. Acute
  16. 45
  17. Right
  18. 120
  19. 95
  20. 140
  21. 120
  22. 70
  23. Obtuse
  24. 55
  25. 25
  26. Acute
  27. Obtuse
  28. 70
  29. 135
  30. 65
  31. 160
  32. 45
  33. 25
  34. 90
  35. Obtuse
  36. 130
  37. 45
  38. 80
  39. Obtuse
  40. 105

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