Decagonal bipyramid

A decagonal bipyramid is a type of three-dimensional geometric shape that belongs to the family of polyhedra. Specifically, it is a bipyramid based on a decagon, which is a polygon with ten sides. ### Characteristics of a Decagonal Bipyramid: 1. **Base Faces**: The decagonal bipyramid has two decagonal faces as its bases, one at the top and one at the bottom.