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Class 6 Maths Worksheet: Angles and Geometry

Maths worksheets lesson 46: Basic geometry: angles and turns · Set 367 · 40 sums
TalentJR

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.An angle measures 285°. What kind of angle is it? (a) Obtuse (b) Reflex (c) Acute
  2. 2.Three angles together make a straight line. Two of them are 45° and 95°. What is the third angle (in degrees)?
  3. 3.You face South and turn anticlockwise through 180°. Which direction do you face now? (a) South (b) North (c) West (d) East
  4. 4.A straight angle (180°) is split into 4 equal angles. How big is each angle (in degrees)?
  5. 5.An angle measures 100°. What kind of angle is it? (a) Reflex (b) Right (c) Obtuse
  6. 6.Four angles meet at a point. Three of them are 50°, 40° and 130°. What is the fourth angle (in degrees)?
  7. 7.Three angles together make a straight line. Two of them are 20° and 85°. What is the third angle (in degrees)?
  8. 8.Three angles together make a straight line. Two of them are 55° and 45°. What is the third angle (in degrees)?
  9. 9.Three angles together make a straight line. Two of them are 100° and 70°. What is the third angle (in degrees)?
  10. 10.An angle measures 70°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  11. 11.Three angles together make a straight line. Two of them are 25° and 55°. What is the third angle (in degrees)?
  12. 12.You face West and turn anticlockwise through 90°. Which direction do you face now? (a) West (b) East (c) North (d) South
  13. 13.You face East and turn clockwise through 90°. Which direction do you face now? (a) North (b) West (c) East (d) South
  14. 14.Three angles together make a straight line. Two of them are 10° and 85°. What is the third angle (in degrees)?
  15. 15.You face North and turn clockwise through 90°. Which direction do you face now? (a) South (b) East (c) West (d) North
  16. 16.An angle measures 15°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  17. 17.The minute hand of a clock turns clockwise from 10 to 5. How many degrees does it turn?
  18. 18.Three angles together make a straight line. Two of them are 45° and 60°. What is the third angle (in degrees)?
  19. 19.You face West and turn clockwise through 180°. Which direction do you face now? (a) North (b) East (c) South (d) West
  20. 20.A straight angle (180°) is split into 2 equal angles. How big is each angle (in degrees)?
  21. 21.You face East and turn clockwise through 180°. Which direction do you face now? (a) South (b) West (c) East (d) North
  22. 22.Three angles together make a straight line. Two of them are 80° and 15°. What is the third angle (in degrees)?
  23. 23.The minute hand of a clock turns clockwise from 2 to 1. How many degrees does it turn?
  24. 24.Three angles together make a straight line. Two of them are 25° and 140°. What is the third angle (in degrees)?
  25. 25.You face North and turn clockwise through 270°. Which direction do you face now? (a) North (b) West (c) South (d) East
  26. 26.An angle measures 135°. What kind of angle is it? (a) Acute (b) Reflex (c) Obtuse
  27. 27.A full turn (360°) is split into 5 equal angles. How big is each angle (in degrees)?
  28. 28.Three angles together make a straight line. Two of them are 20° and 25°. What is the third angle (in degrees)?
  29. 29.Four angles meet at a point. Three of them are 70°, 40° and 230°. What is the fourth angle (in degrees)?
  30. 30.An angle measures 90°. What kind of angle is it? (a) Reflex (b) Right (c) Acute
  31. 31.An angle measures 235°. What kind of angle is it? (a) Right (b) Obtuse (c) Reflex
  32. 32.Three angles together make a straight line. Two of them are 90° and 65°. What is the third angle (in degrees)?
  33. 33.A straight angle (180°) is split into 12 equal angles. How big is each angle (in degrees)?
  34. 34.A straight angle (180°) is split into 5 equal angles. How big is each angle (in degrees)?
  35. 35.Four angles meet at a point. Three of them are 60°, 50° and 180°. What is the fourth angle (in degrees)?
  36. 36.The minute hand of a clock turns clockwise from 5 to 3. How many degrees does it turn?
  37. 37.The minute hand of a clock turns clockwise from 10 to 1. How many degrees does it turn?
  38. 38.Three angles together make a straight line. Two of them are 85° and 85°. What is the third angle (in degrees)?
  39. 39.Three angles together make a straight line. Two of them are 15° and 20°. What is the third angle (in degrees)?
  40. 40.Three angles together make a straight line. Two of them are 25° and 120°. What is the third angle (in degrees)?

Answer key

  1. Reflex
  2. 40
  3. North
  4. 45
  5. Obtuse
  6. 140
  7. 75
  8. 80
  9. 10
  10. Acute
  11. 100
  12. South
  13. South
  14. 85
  15. East
  16. Acute
  17. 210
  18. 75
  19. East
  20. 90
  21. West
  22. 85
  23. 330
  24. 15
  25. West
  26. Obtuse
  27. 72
  28. 135
  29. 20
  30. Right
  31. Reflex
  32. 25
  33. 15
  34. 36
  35. 70
  36. 300
  37. 90
  38. 10
  39. 145
  40. 35

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