3D Shapes Explained

This video tutorial covers the basics of 3D shapes, explaining their dimensions and properties such as faces, edges, and vertices. It distinguishes between polyhedra, which have flat polygonal faces, and non-polyhedra, which include curved surfaces. A detailed example of a cuboid is provided, highlighting its six rectangular faces, 12 edges, and eight vertices. The video concludes with practice questions for viewers to test their understanding.

What are the three dimensions of a 3D shape?

• Length, width, and depth

• Length, width, and height

• Width, height, and depth

• Length, height, and depth

What is the term for the flat surface of a 3D shape?

• Edge

• Base

• Vertex

• Face

Which of the following is true about polyhedra?

• They have at least one curved surface.

• They have no vertices.

• All faces are polygons.

• They have no edges.

How many edges does a cuboid have?

• 12

• 6

• 8

• 10

How many vertices are there in a cuboid?

• 4

• 6

• 10

• 8