Lesson Video: Vertices of 3D Shapes Mathematics • 1st Grade

In this video, we will learn how to identify and count the vertices of 3D shapes and build shapes.

04:50

Video Transcript

Vertices of 3D Shapes

In this video, we’re going to learn how to build 3D shapes and how to count the number of vertices a 3D shape has.

A class are making 3D shapes using gumdrops and toothpicks. Can you tell what shape it’s going to be? It’s a cube. They used cocktail sticks for the edges of this cube. And for this corner or vertex, they used a gumdrop. We use the word “vertex” to describe one corner. The cube used eight gumdrops. It has eight vertices. They made a square-based pyramid. Again, they used cocktail sticks for the edges and gumdrops for the vertices. They also built a rectangular prism or a cuboid. Building shapes like this is a good way to learn about edges and vertices. In this video, we’re going to practice counting the number of vertices 3D shapes have. Remember, a vertex is the point where two or more lines meet. Let’s practice counting the number of vertices that 3D shapes have.

How many vertices does the shape have?

A vertex is the place where two or more edges meet. Here’s one vertex. We need to count all the vertices. There are four vertices on the base of this shape and another four at the top, giving us a total of eight vertices. This shape has eight vertices.

How many vertices does the shape have?

A vertex is the point where two or more edges meet. Let’s count the number of vertices this shape has. Here’s one, two, three, four, five. The shape has five vertices.

True or false: The two given shapes have the same number of vertices.

We have to decide if this statement is true or false. Do the given shapes have the same number of vertices? Let’s start by marking and counting the vertices on the first shape. A vertex is the place where two or more edges meet. Here’s one, two, three, four, five, six, seven, eight. This shape has eight vertices. Now, we need to count and then compare the number of vertices on the second shape. One, two, three, four, five, six. The two given shapes don’t have the same number of vertices. Our first shape has eight vertices, and the second has six. The statement which says that both shapes have the same number of vertices is false because each shape has a different number of vertices.

What have we learned in this video? We have learned how to build some 3D shapes. We used cocktail sticks for the edges. And where the edges meet, we used a gumdrop as a vertex. We’ve learned that a vertex is the point where two or more edges meet. And we’ve learned to count the number of vertices a 3D shape has. And we’ve learned to count the number of vertices a 3D shape has. Why not try building some 3D shapes of your own? You could use cocktail sticks for the edges and gumdrops, jelly beans, or marshmallows for the vertices.

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