1. Objective - To identify solid figures.
Polyhedrons -
Closed figures bounded by polygons.
Prisms
Bases
Bases
Pyramids
Bases

2. Non-Polyhedrons
Cylinders
Cones
Spheres

3. Polyhedron are named by the polygons that form their bases.
hexagonal prism
triangular prism
rectangular prism
pentagonal pyramid
triangular pyramid
square pyramid

4. Parts of a polyhedron.
Faces
Vertices
Edges
This rectangular prism has:
8 Vertices
12 Edges
6 Faces

5. How many faces, vertices and edges does this triangular prism have?

6. Write the number of faces, vertices and edges.1) 3)
6, 8, 12
8, 12, 18 2) 4)
5, 5, 8
6, 6, 10