It is called its base!
A pentahedron is a 3-D shape and so, not surprisingly, a 3-D pentahedron is called a pentahedron!
It can be a quadrilateral or a triangle.
pentahedron
It is a pentahedron. One example of an irregular pentahedron is the 4-sided pyramid.
A rectangular pyramid is a 3-dimensional object called a pentahedron. It has a rectangular base. To each side of the base are attached triangles that rise so as to meet at a single point above the base.
None.
It is a pentahedron with a rectangular base and four triangular lateral faces.
there are 15 edges in a pentahedron
A pentahedron can be a quadrilateral based pyramid or a triangular prism. A pyramid has only one base and so, since the question specifies "bases", the shape must be the second and so the bases are triangles.
A triangular prism (a pentahedron) has 3 sides on its base, 3 base vertices, and three top vertices.
A pentahedron can have 5 or six vertices.
No. Pentahedron has 5 faces, and Cube has 6.