# Bezdek's Unistable Polyhedron With 18 Faces

Bezdek's Unistable Polyhedron With 18 Faces

This Demonstration shows Bezdek's unistable polyhedron with 18 faces. A face is stable if, and only if, the orthogonal projection (red point) of the center of mass (black point) onto the face lies inside the face. A unistable polyhedron has only one stable face. The polyhedron is a skew pyramid placed along the axis and can be changed using the sliders.

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