Tangent to Three Curves

 From:  Paolo (PAOLOLOBBIA)
1899.1 
Hi Michael,

In Moi3d there is a command

'Draw a circle of the specified radius tangent
to 2 existing curves'

Question: is there script allowing me to draw
a circle or oval, tangent to three or more curves

Like the example:

EDITED: 24 Oct 2008 by PAOLOLOBBIA