Cyclic Quadrilateral Incentre-RectangleArchived 2011-09-28 at the Wayback Machine with interactive animation illustrating a rectangle that becomes a 'crossed rectangle', making a good case for regarding a 'crossed rectangle' as a type of rectangle.
Cyclic Quadrilateral Incentre-RectangleArchived 2011-09-28 at the Wayback Machine with interactive animation illustrating a rectangle that becomes a 'crossed rectangle', making a good case for regarding a 'crossed rectangle' as a type of rectangle.