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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 959 · 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.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  3. 3.Two angles of a triangle are 65° and 100°. What is the third angle (in degrees)?
  4. 4.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  5. 5.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  7. 7.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  8. 8.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 110° and 160°. What is the third angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  14. 14.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  15. 15.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  16. 16.Two angles of a triangle are 100° and 25°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 25° and 40°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 20° and 70°. What is the third angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 80° and 150°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  27. 27.An angle measures 120°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  28. 28.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 90° and 190°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 90° and 180°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  40. 40.Two angles of a triangle are 45° and 120°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 125
  3. 15
  4. Straight
  5. 25
  6. 15
  7. Obtuse
  8. 60
  9. 90
  10. 55
  11. 130
  12. 135
  13. 150
  14. Right
  15. 60
  16. 55
  17. 115
  18. 100
  19. 65
  20. 90
  21. 180
  22. 100
  23. 70
  24. 130
  25. 200
  26. 165
  27. Obtuse
  28. 80
  29. 90
  30. 45
  31. 80
  32. 150
  33. 60
  34. 155
  35. 160
  36. 85
  37. 25
  38. 90
  39. 30
  40. 15

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