This model consistw of six pieces of wire, each bent at the center into a ninety degree angle. The edges of the wires are held together in pairs. One leg of each wire is covered with red tubing and the other with gold tubing - the bends all meet at a central vertex. The trihedral angle bounded by the red sides is the supplement of the trihedral angle bounded by the gold sides. A paper tag with the model reads: 351.
Compare MA.304723.135 and MA.304723.136.
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