1. Lesson 10-6
Solid Figures

2. Review What is the formula for the circumference of a circle? C=∏d
What is the formula for the area of a circle?
A= ∏r
What does ∏ equal?
3.14

3. Solid Figures
By the end of this lesson you will be able to name solid figures.

4. Vocabulary Polyhedron
A three dimensional object, or solid figure, with flat surfaces, called faces, that are polygons.
Edge
When two faces of a solid figure share a side
Vertex
A point at which three or more edges meet

5. Practice
How many faces, edges, and vertices does each figure have?

6. Prisms
A Polyhedron with two congruent, parallel bases, and other faces that are all parallelograms.
A prism is named for the shape of its base.

7. Cylinders
Has two congruent, parallel bases, but bases of a cylinder are always circular.

8. Pyramids
Has one polygon shaped base, and the other faces are triangles that come to a point.
A pyramid is named for the shape of its base.

9. Cones
Has a circular base and a curved surface that comes to a point.