set of linear platonic solids. mathematical geometric s such as cube, tetrahedron, octahedron, dodecahedron

figure platonic solid line geometric shape 3d cube logo icon polygon outline triangl pentagon tetrahedron octahedron dodecahedron icosahedron mathematics triangle object illustration edit design polygonal vector set education plato game isometric crystal isometry white educational background square gradient abstract button geometry pyramid prism structure element isolated form graphic symmetry