1. a solid figure with many flat faces, straight edges, and sharp corners
Usage: geometry

Examples

• A cube is a simple example of a polyhedron with six square faces.
• The students learned to identify different types of polyhedra in geometry class.
• A pyramid is a polyhedron with a polygonal base and triangular faces.
• The crystal formed a beautiful polyhedron with twelve pentagonal faces.
• Mathematicians study the properties of regular polyhedra like tetrahedrons and octahedrons.
• The architect designed a building shaped like a complex polyhedron.