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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 968 · 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.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  2. 2.An angle measures 135°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  3. 3.Two angles of a triangle are 20° and 50°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  5. 5.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  6. 6.An angle measures 50°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  7. 7.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  14. 14.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  15. 15.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 90° and 110°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 40° and 35°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 30° and 105°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  26. 26.Two angles of a triangle are 30° and 95°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 90° and 40°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 100° and 170°. What is the third angle (in degrees)?
  29. 29.An angle measures 25°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  30. 30.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 40° and 75°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  35. 35.An angle measures 75°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  36. 36.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 25° and 45°. What is the third angle (in degrees)?
  40. 40.An angle measures 80°. What kind of angle is it? (a) Right (b) Straight (c) Acute

Answer key

  1. 75
  2. Obtuse
  3. 110
  4. 120
  5. Right
  6. Acute
  7. 40
  8. 220
  9. 150
  10. 5
  11. 180
  12. 90
  13. 180
  14. Straight
  15. 60
  16. 160
  17. 50
  18. 115
  19. 30
  20. 105
  21. 45
  22. 25
  23. 260
  24. 120
  25. 90
  26. 55
  27. 50
  28. 90
  29. Acute
  30. 80
  31. 65
  32. 20
  33. 15
  34. 55
  35. Acute
  36. 70
  37. 35
  38. 250
  39. 110
  40. Acute

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