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Class 6 Maths Worksheet: Angles and Geometry

Maths worksheets lesson 46: Basic geometry: angles and turns · Set 839 · 40 sums
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The method (Know the totals): Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex between 180° and 360°. Angles on a straight line add up to 180°; angles around a point add up to 360°. Each hour mark on a clock is 30° apart (360° ÷ 12). Turning clockwise from North: 90° → East, 180° → South, 270° → West.

NameDateTime takenScore ___ / 40
  1. 1.Four angles meet at a point. Three of them are 60°, 50° and 150°. What is the fourth angle (in degrees)?
  2. 2.Three angles together make a straight line. Two of them are 50° and 55°. What is the third angle (in degrees)?
  3. 3.Three angles together make a straight line. Two of them are 20° and 95°. What is the third angle (in degrees)?
  4. 4.An angle measures 115°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  5. 5.Three angles together make a straight line. Two of them are 60° and 100°. What is the third angle (in degrees)?
  6. 6.Three angles together make a straight line. Two of them are 45° and 50°. What is the third angle (in degrees)?
  7. 7.The minute hand of a clock turns clockwise from 5 to 7. How many degrees does it turn?
  8. 8.Three angles together make a straight line. Two of them are 40° and 115°. What is the third angle (in degrees)?
  9. 9.The minute hand of a clock turns clockwise from 12 to 2. How many degrees does it turn?
  10. 10.The minute hand of a clock turns clockwise from 8 to 3. How many degrees does it turn?
  11. 11.An angle measures 325°. What kind of angle is it? (a) Straight (b) Reflex (c) Right
  12. 12.Three angles together make a straight line. Two of them are 20° and 65°. What is the third angle (in degrees)?
  13. 13.Three angles together make a straight line. Two of them are 15° and 150°. What is the third angle (in degrees)?
  14. 14.An angle measures 40°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  15. 15.Four angles meet at a point. Three of them are 90°, 100° and 60°. What is the fourth angle (in degrees)?
  16. 16.You face East and turn anticlockwise through 270°. Which direction do you face now? (a) East (b) West (c) South (d) North
  17. 17.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  18. 18.Three angles together make a straight line. Two of them are 70° and 90°. What is the third angle (in degrees)?
  19. 19.A straight angle (180°) is split into 2 equal angles. How big is each angle (in degrees)?
  20. 20.Four angles meet at a point. Three of them are 80°, 90° and 40°. What is the fourth angle (in degrees)?
  21. 21.Four angles meet at a point. Three of them are 30°, 60° and 240°. What is the fourth angle (in degrees)?
  22. 22.Three angles together make a straight line. Two of them are 10° and 150°. What is the third angle (in degrees)?
  23. 23.Four angles meet at a point. Three of them are 30°, 60° and 40°. What is the fourth angle (in degrees)?
  24. 24.You face West and turn anticlockwise through 180°. Which direction do you face now? (a) North (b) East (c) South (d) West
  25. 25.The minute hand of a clock turns clockwise from 11 to 10. How many degrees does it turn?
  26. 26.A full turn (360°) is split into 4 equal angles. How big is each angle (in degrees)?
  27. 27.A straight angle (180°) is split into 6 equal angles. How big is each angle (in degrees)?
  28. 28.Four angles meet at a point. Three of them are 60°, 100° and 40°. What is the fourth angle (in degrees)?
  29. 29.Four angles meet at a point. Three of them are 90°, 90° and 90°. What is the fourth angle (in degrees)?
  30. 30.Three angles together make a straight line. Two of them are 30° and 10°. What is the third angle (in degrees)?
  31. 31.A full turn (360°) is split into 12 equal angles. How big is each angle (in degrees)?
  32. 32.Three angles together make a straight line. Two of them are 45° and 20°. What is the third angle (in degrees)?
  33. 33.Three angles together make a straight line. Two of them are 20° and 30°. What is the third angle (in degrees)?
  34. 34.An angle measures 270°. What kind of angle is it? (a) Right (b) Reflex (c) Straight
  35. 35.Three angles together make a straight line. Two of them are 10° and 145°. What is the third angle (in degrees)?
  36. 36.A full turn (360°) is split into 8 equal angles. How big is each angle (in degrees)?
  37. 37.The minute hand of a clock turns clockwise from 6 to 1. How many degrees does it turn?
  38. 38.A full turn (360°) is split into 5 equal angles. How big is each angle (in degrees)?
  39. 39.An angle measures 210°. What kind of angle is it? (a) Acute (b) Obtuse (c) Reflex
  40. 40.Four angles meet at a point. Three of them are 30°, 100° and 170°. What is the fourth angle (in degrees)?

Answer key

  1. 100
  2. 75
  3. 65
  4. Obtuse
  5. 20
  6. 85
  7. 60
  8. 25
  9. 60
  10. 210
  11. Reflex
  12. 95
  13. 15
  14. Acute
  15. 110
  16. South
  17. Straight
  18. 20
  19. 90
  20. 150
  21. 30
  22. 20
  23. 230
  24. East
  25. 330
  26. 90
  27. 30
  28. 160
  29. 90
  30. 140
  31. 30
  32. 115
  33. 130
  34. Reflex
  35. 25
  36. 45
  37. 210
  38. 72
  39. Reflex
  40. 60

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