Polyhedra are geometric shapes composed of flat polygons connected by straight bars. These shapes are formed by inscribing or circumscribing a sphere, creating a highly efficient geometry . In this video, we begin with an equilateral triangle evolving into widely used polyhedra in structural engineering. Playing with a tetrahedron, an octahedron, and ultimately an icosahedron, these are one of the first steps to understanding how geodesic domes and shell structures work in practice. - Os poliedr