Here is the dual of the solid above, also.
These images were created with Stella 4d, which you can find at http://www.software3d.com/Stella.php.
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RobertLovesPi.net 
How was this nonagon shape discovered? Do you have any more info on its dimensions? I’m curious if it lines up with the points of the “6 dodecahedron compound”
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I don’t remember. This post is over 7 years old. I don’t even call them nonagons anymore — they are, more properly, enneagons.
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