Prisms and Pyramids
Prisms are 3-dimensional figures whose
faces are polygons. The two faces that
are parallel and congruent are called the
bases. The shape of the base
determines the name of the prism.
Pyramids are 3-dimensional figures with
one base that is a polygon and all other
faces are triangles that meet in a single
vertex. The shape of the base
determines the name of the pyramid.
Pentagonal Prism
Square Pyramid
Using the same examples, let’s determine
the number of faces and vertices.
Pentagonal Prism
Bases: 2 Pentagons
Lateral Faces: 5 rectangles
Total Faces: 7
Vertices: 10
So how many faces and vertices
would a hexagonal prism have?
Using the same examples, let’s determine
the number of faces and vertices.
Square Pyramid
Base: 1 Square
Lateral Faces: 4 Triangles
Total Faces: 5
Vertices: 5
So how many faces and vertices
would a triangular pyramid have?