# Solid Shapes

We will learn about solid shapes, which are three-dimensional objects that take up space. We will explore the characteristics of different types of solid shapes and how to identify them.

## Types of Solid Shapes There are several types of solid shapes that you should be familiar with:

1. Cubes – Cubes are six-faced objects, where all faces are identical squares.
2. Rectangular Prisms – Rectangular prisms have two rectangular faces, and the other four faces are squares.
3. Pyramids – Pyramids are four-faced objects, with a base that is a polygon and a point at the top. The triangular pyramid has a triangular base, while the square pyramid has a square base.
4. Cylinders – Cylinders are objects with two circular bases that are parallel to each other.
5. Cones – Cones are three-dimensional objects with a circular base and a single point at the top.
6. Spheres – Spheres are perfectly round, three-dimensional objects.

## Characteristics of Solid Shapes Each solid shape has unique characteristics that make it different from other shapes.

1. Faces – The flat surfaces of the solid shape.
2. Edges – The line segments where two faces of a solid shape meet.
3. Vertices – The points where three or more faces of a solid shape meet.

Identifying Solid Shapes To identify a solid shape, we need to look at its faces, edges, and vertices. For example, a cube has six square faces, 12 edges, and eight vertices. A pyramid has a polygonal base and a point at the top, with a number of triangular faces coming together at the top vertex.

Practice Exercise Now that you have learned about solid shapes and their characteristics, let’s try a practice exercise.

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