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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 398 · 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 of a triangle are 55° and 95°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 40° and 120°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  11. 11.An angle measures 85°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  12. 12.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  14. 14.An angle measures 25°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  15. 15.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  17. 17.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  18. 18.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 85° and 25°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  22. 22.An angle measures 75°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  23. 23.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 90° and 190°. What is the third angle (in degrees)?
  25. 25.An angle measures 135°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  26. 26.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  27. 27.An angle measures 45°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  28. 28.An angle measures 30°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  29. 29.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 50° and 20°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 40° and 20°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 45° and 95°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  38. 38.Two angles of a triangle are 45° and 55°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 120
  3. 5
  4. 60
  5. 90
  6. 50
  7. 30
  8. 20
  9. 60
  10. 60
  11. Acute
  12. 60
  13. 170
  14. Acute
  15. 120
  16. 130
  17. Right
  18. 90
  19. 30
  20. 70
  21. 10
  22. Acute
  23. 20
  24. 80
  25. Obtuse
  26. 70
  27. Acute
  28. Acute
  29. 90
  30. 165
  31. 110
  32. 15
  33. 75
  34. 120
  35. 95
  36. 40
  37. 150
  38. 80
  39. 200
  40. 130

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