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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 98 · 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 of a triangle are 70° and 95°. What is the third angle (in degrees)?
  2. 2.An angle measures 10°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  3. 3.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  8. 8.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 20° and 155°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 55° and 25°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 80° and 85°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  16. 16.An angle measures 15°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  17. 17.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  18. 18.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  20. 20.An angle measures 20°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  21. 21.An angle measures 95°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  22. 22.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 100° and 35°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 80° and 95°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  27. 27.An angle measures 140°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  28. 28.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  29. 29.An angle measures 75°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  30. 30.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 110° and 160°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  34. 34.An angle measures 125°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  35. 35.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?

Answer key

  1. 15
  2. Acute
  3. 180
  4. 90
  5. 65
  6. 60
  7. Straight
  8. 70
  9. 55
  10. 5
  11. 140
  12. 30
  13. 100
  14. 15
  15. 120
  16. Acute
  17. Right
  18. 10
  19. 60
  20. Acute
  21. Obtuse
  22. 50
  23. 45
  24. 5
  25. 90
  26. 120
  27. Obtuse
  28. Acute
  29. Acute
  30. 20
  31. 90
  32. 50
  33. 165
  34. Obtuse
  35. 85
  36. 200
  37. 140
  38. 70
  39. 140
  40. 130

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