[Chimera-users] How to draw 3-fold axis of a Icosahedron

[sunyeping]

Dear everyone,

I created an icoshedron with  "Tool>high-order structre>Icoshedron surface" menu. Do you know how to draw  3-fold axis of a Icosahedron so that I can see the 3-fold symmetry center on the icoshedron surface?
Thank you in advacne.
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