In these lessons, we will learn what is a prism. We will learn about rectangular prisms and triangular prisms. We aill alos learn the nets of prisms.

Related
Topics:

More Lessons for Grade 4 Math

Grade 4 Worksheets

Geometry Worksheets

Geometry Games

A prism is a 3-dimensional figure.
All prisms have faces, two of which are referred to as
bases. These two bases are parallel and may take the shape of any polygon.
The name of a prism refers to the shape of the bases, for example, triangular prism, rectangular prism, hexagonal
prisms. In Grade Four,
exploration is focused on rectangular prisms and triangular prisms
only.

A rectangular prism has 6 faces, 12 edges and 8 vertices. Note that all square prisms (or cubes) can be called rectangular prisms because a square is a rectangle.

A triangular prism has 5 faces, 9 edges and 6 vertices.

What is a prism?

Prisms are three dimensional figures solids that occupy space. They come in many shapes and sizes and are named by the shape of their base.

3D-Shapes: Vertices, Edges and Faces

How to find edges and vertices.

Spheres, triangular pyramids, square based pyramids, and an explanation of edges, vertices and faces.

A vertex is a corner. Plural for vertex is vertices. An edge is a straight line. A face is a surface.

A net is a 2-dimensional pattern of a 3-dimensional figure that can be folded to form the figure.

The following diagrams show the possible nets for a cube and also nets that cannot form a cube.

How to represent 3-dimensional figures with nets by analyzing their faces and bases.

Nets of 3D-Shapes

What is the net of a shape? A few example nets together with their 3D counterparts.

Make 3D Solid Shapes - Cube

This video will show how a net is folded to form a cube.

Make 3D Solid Shapes - Triangular Prism

This video will show how a net is folded to form a triangular prism.

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.