Angles & Polygons

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Across
  1. 4. at right angles to the horizon or another object
  2. 6. two angles whose sum is 90º
  3. 8. a point where two or more rays or the arms of an angle meet
  4. 9. a polygon with four angles and four sides
  5. 10. an angle measuring 90º or a triangle with one right angle
  6. 14. a twelve-sided shape
  7. 15. an eight-sided shape
  8. 17. a triangle with 3 equal sides and 3 equal angles
  9. 21. a seven-sided shape
  10. 22. curved outwards; a polygon having all angles smaller than 180º
  11. 23. a plane shape having three or more straight sides
  12. 25. angle measures between 0º and 90º or a triangle with three acute angles
  13. 26. characteristics, properties or features which allow items to be sorted and classified as belonging to a set or group
  14. 27. a ten-sided shape
  15. 28. lines that are always an equal distance apart; lines that do not/ will not intersect
Down
  1. 1. having the same shape and the same size
  2. 2. an angle that equals 180º
  3. 3. two angles whose sum is 180º
  4. 5. having sides, faces or angles of differing sizes
  5. 7. any angle between 180º and 360º
  6. 10. polygons having all sides equal and all angles equal
  7. 11. a triangle with 2 equal sides and 2 equal angles
  8. 12. curved inwards; a polygon having one or more angles larger than 180º
  9. 13. an eleven-sided shape
  10. 16. a six-sided shape
  11. 18. a triangle in which all three sides are a different length
  12. 19. a five-sided shape
  13. 20. any angle between 90º and 180º or a triangle with one obtuse angle
  14. 24. a nine-sided shape
  15. 25. the amount of turning between two rays called arms meeting at a common point called the vertex