## LESSON: Classifying Solid Figures

### Vocab/Object

## Objectives

- Classify solid figures as prisms, cylinders, pyramids, cones or spheres.
- Identify faces, edges and vertices of solid figures.
- Select real-world examples of given solid figures.

## Vocabulary

- Plane Figure
- a flat two-dimensional figure.

- Solid Figure
- a three-dimensional figure with height, width and depth.

- Prism
- a solid with two parallel congruent bases.

- Cylinder
- a solid with two parallel congruent circular bases.

- Pyramid
- a polygon for a base and triangular faces that meet at one vertex.

- Cone
- a solid with a circular base and one vertex

- Sphere
- a three-dimensional circular solid

- Face
- any flat surface on a solid figure

- Edge
- when two faces meet in a line segment. The line segment is the edge.

- Vertex
- when three or more faces meet at a single point.

- Polyhedron
- a solid figure with flat surfaces that are polygons.