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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 697 · 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.An angle measures 30°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  2. 2.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  3. 3.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 90° and 40°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  10. 10.Two angles of a triangle are 30° and 50°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 65° and 50°. What is the third angle (in degrees)?
  16. 16.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  17. 17.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 40° and 110°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 80° and 190°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 90° and 190°. What is the third angle (in degrees)?
  27. 27.An angle measures 45°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  28. 28.Two angles of a triangle are 95° and 30°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 30° and 20°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 60° and 95°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 100° and 180°. What is the third angle (in degrees)?
  37. 37.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  38. 38.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 55° and 35°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?

Answer key

  1. Acute
  2. Straight
  3. 60
  4. 5
  5. 15
  6. 55
  7. 50
  8. 70
  9. 90
  10. 100
  11. 20
  12. 160
  13. 150
  14. 90
  15. 65
  16. Right
  17. 15
  18. 30
  19. 60
  20. 30
  21. 125
  22. 30
  23. 90
  24. 150
  25. 100
  26. 80
  27. Acute
  28. 55
  29. 170
  30. 80
  31. 40
  32. 65
  33. 130
  34. 135
  35. 25
  36. 80
  37. Acute
  38. 130
  39. 90
  40. 120

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