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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 130 · 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.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  3. 3.Two angles of a triangle are 65° and 20°. What is the third angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 90° and 85°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  14. 14.An angle measures 165°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  15. 15.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  18. 18.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  19. 19.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  20. 20.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  21. 21.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 35° and 60°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  27. 27.An angle measures 120°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  28. 28.Two angles of a triangle are 65° and 25°. What is the third angle (in degrees)?
  29. 29.An angle measures 140°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  30. 30.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 80° and 190°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  33. 33.An angle measures 55°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  34. 34.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 100° and 60°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 45° and 50°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 85
  3. 95
  4. 155
  5. 60
  6. 70
  7. 5
  8. 55
  9. 15
  10. 150
  11. 10
  12. 120
  13. 150
  14. Obtuse
  15. 110
  16. 25
  17. 110
  18. Right
  19. 200
  20. Straight
  21. 30
  22. 160
  23. 90
  24. 150
  25. 85
  26. 20
  27. Obtuse
  28. 90
  29. Obtuse
  30. 200
  31. 90
  32. 100
  33. Acute
  34. 80
  35. 20
  36. 70
  37. 150
  38. 105
  39. 45
  40. 85

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