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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 883 · 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 165°. What is the other angle (in degrees)?
  2. 2.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  3. 3.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 105°. 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.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 65° and 110°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  13. 13.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  14. 14.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  15. 15.An angle measures 120°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  16. 16.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 50° and 30°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 25° and 65°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
  29. 29.An angle measures 85°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  30. 30.An angle measures 55°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  31. 31.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  32. 32.An angle measures 140°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  33. 33.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  35. 35.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  36. 36.Two angles of a triangle are 85° and 40°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?

Answer key

  1. 15
  2. Straight
  3. 10
  4. 10
  5. 240
  6. 75
  7. 65
  8. 60
  9. 170
  10. 5
  11. 50
  12. 25
  13. Acute
  14. 130
  15. Obtuse
  16. 30
  17. 5
  18. 45
  19. 55
  20. 100
  21. 90
  22. 110
  23. 90
  24. 85
  25. 70
  26. 150
  27. 260
  28. 130
  29. Acute
  30. Acute
  31. 60
  32. Obtuse
  33. 85
  34. 150
  35. Right
  36. 55
  37. 180
  38. 80
  39. 120
  40. 90

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