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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 897 · 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.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  3. 3.An angle measures 130°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  4. 4.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  9. 9.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  11. 11.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  14. 14.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  15. 15.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  20. 20.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  21. 21.Three angles meet at a point. Two of them are 100° and 110°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 75° and 95°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 75° and 70°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 25° and 50°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 65° and 25°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 95° and 30°. What is the third angle (in degrees)?
  29. 29.An angle measures 115°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  30. 30.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  34. 34.Two angles of a triangle are 25° and 40°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 90° and 110°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 45° and 45°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 50° and 60°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?

Answer key

  1. 25
  2. 90
  3. Obtuse
  4. 170
  5. 60
  6. 80
  7. 65
  8. 150
  9. 35
  10. Straight
  11. 25
  12. 25
  13. 5
  14. Right
  15. 135
  16. 120
  17. 60
  18. 180
  19. 60
  20. Obtuse
  21. 150
  22. 10
  23. 120
  24. 45
  25. 35
  26. 105
  27. 90
  28. 55
  29. Obtuse
  30. 90
  31. 10
  32. 35
  33. 30
  34. 115
  35. 80
  36. 160
  37. 145
  38. 90
  39. 250
  40. 155

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