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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 960 · 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.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  2. 2.An angle measures 20°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  3. 3.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 35° and 90°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  12. 12.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  13. 13.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  15. 15.An angle measures 30°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  16. 16.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  20. 20.An angle measures 165°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  21. 21.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 50° and 75°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 25° and 130°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  30. 30.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  33. 33.An angle measures 65°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  34. 34.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  35. 35.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?

Answer key

  1. 90
  2. Acute
  3. 70
  4. 230
  5. 55
  6. 35
  7. 40
  8. 30
  9. 45
  10. 10
  11. 95
  12. Straight
  13. 5
  14. 120
  15. Acute
  16. 170
  17. 200
  18. 20
  19. 120
  20. Obtuse
  21. 90
  22. 55
  23. 135
  24. 100
  25. 60
  26. 170
  27. 155
  28. 25
  29. 150
  30. 15
  31. 65
  32. 140
  33. Acute
  34. Right
  35. 60
  36. 70
  37. 125
  38. 150
  39. 85
  40. 30

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