Geometry Crossword

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Across
  1. 4. lines which intersect at a right-angle
  2. 7. a quadrilateral with all 4 sides of equal length and all 4 angles of equal size
  3. 8. an angle between 180 degrees and 360 degrees
  4. 9. lines which never intersect
  5. 10. a triangle with all 3 sides of equal length
  6. 11. where 2 lines meet
  7. 13. a triangle with 2 sides of equal length
  8. 15. a 3-dimensional shapes with 6 equal square surfaces
  9. 16. an angle less than 90 degrees
  10. 18. shapes with the exact same shape and size
Down
  1. 1. the distance around a circle
  2. 2. an angle between 90 degrees and 180 degrees
  3. 3. a straight line joining the centre of a circle to a point on the circle
  4. 5. a polygon with all sides of the same length and all angles of equal size
  5. 6. a polygon with 6 sides
  6. 7. a triangle with no sides of equal length
  7. 12. a quadrilateral with all 4 sides of equal length but not all 4 angles of equal size
  8. 14. a polygon with 10 sides
  9. 17. a polygon with all sides not of the same length and all angles not of equal size
  10. 18. a straight line joining 2 points on a circle