1. a solid figure with five plane faces
Usage: geometry

Examples

• The pyramid is an example of a pentahedron.
• Students learned to identify different types of pentahedra in geometry class.
• A triangular prism is a common pentahedron with two triangular faces and three rectangular faces.
• The crystal formed a perfect pentahedron shape.
• Mathematicians study the properties of pentahedra and other polyhedra.
• The architect designed a building based on a pentahedron structure.