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Topic: Deformable platonic "solids"
Replies: 23   Last Post: Mar 12, 2013 8:11 PM

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Richard Tobin

Posts: 1,395
Registered: 12/6/04
Re: Deformable platonic "solids"
Posted: Feb 28, 2013 7:48 AM
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In article <511e7643-79fb-4418-9108-16b317c87dff@googlegroups.com>,
david petry <david_lawrence_petry@yahoo.com> wrote:
>Any line segment joining two points reduces the
>total number of degrees of freedom of the system of points and line
>segments by one.

Not in general. Consider a deformable solid with a square face.
Joining two opposite corners will make that square rigid. Joining
the other two will have no further effect, while adding a line
somewhere else in the solid may.

-- Richard

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