 Figure 1: Square pyramid. Image courtesy Wikipedia.org. 
 Manipulative 1: Triangular Prism Created with GeoGebra. 

A pentahedron is a five sided
polyhedron.
There is no regular pentahedron. There are two pentahedrons that can exist in
Euclidean 3space.
One is a square pyramid (see figure 1). The other is a triangular prism. Click on
the blue points in manipulative 1 and drag them to change the figure.
Geometric Nets
A geometric net
is a shape that can exist in 2space, which can be folded
into a polyhedron. Click on the name of the net to download a printable net you can
cut out and decorate.
Pentahedron Nets
Image  Name  Description 

Triangular Prism

A triangular prism has identical triangles as base and top
with straight sides.


Square Pyramid

A square pyramid has a square bases with straight sides
that come to a point.

Table 1 
