Polygons 2D
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.. autoclass:: SurfPolygonal2d
    :members:
    :show-inheritance:
	    
.. autoclass:: Polygon2d
    :members:
    :show-inheritance:
	    
.. autoclass:: Quadrangle2d
    :members:
    :show-inheritance:
	    
.. autoclass:: Square2d
    :members:
    :show-inheritance:
	    
.. autoclass:: Triangle2d
    :members:
    :show-inheritance:
	    
.. autoclass:: PolygonHoled2d
    :members:
    :show-inheritance: