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:

- Cubes – Cubes are six-faced objects, where all faces are identical squares.
- Rectangular Prisms – Rectangular prisms have two rectangular faces, and the other four faces are squares.
- 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.
- Cylinders – Cylinders are objects with two circular bases that are parallel to each other.
- Cones – Cones are three-dimensional objects with a circular base and a single point at the top.
- 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.

- Faces – The flat surfaces of the solid shape.
- Edges – The line segments where two faces of a solid shape meet.
- 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.

## Identify the solid shape in the following images:

Image 1:

Answer: Cube

Image 2:

Answer: Pyramid

Image 3:

Answer: Sphere

## Conclusion:

Solid shapes are three-dimensional objects that take up space. By understanding the characteristics of different types of solid shapes, we can identify them and use them in various applications. Remember that each solid shape has unique faces, edges, and vertices that make it distinct from other shapes.