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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 967 · 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 15°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  2. 2.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  5. 5.An angle measures 45°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  6. 6.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  7. 7.An angle measures 115°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  8. 8.Two angles of a triangle are 40° and 55°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 25° and 140°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  14. 14.An angle measures 170°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  15. 15.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 60° and 100°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  28. 28.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  29. 29.An angle measures 150°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  30. 30.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  31. 31.Two angles of a triangle are 75° and 65°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 80° and 45°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  35. 35.An angle measures 85°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  36. 36.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 130° and 130°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?

Answer key

  1. Acute
  2. 110
  3. 150
  4. 80
  5. Acute
  6. 135
  7. Obtuse
  8. 85
  9. 110
  10. 170
  11. 10
  12. 15
  13. 180
  14. Obtuse
  15. 220
  16. 20
  17. 20
  18. 90
  19. 60
  20. 70
  21. 45
  22. 90
  23. 40
  24. 190
  25. 30
  26. 25
  27. 145
  28. Straight
  29. Obtuse
  30. Right
  31. 40
  32. 30
  33. 55
  34. 120
  35. Acute
  36. 160
  37. 100
  38. 15
  39. 85
  40. 60

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