Building 3-D Shapes

The video tutorial explains the difference between two-dimensional (2D) and three-dimensional (3D) shapes. It starts by describing basic 2D shapes like squares, rectangles, circles, and triangles, which have only one face or surface and can be drawn on paper. These shapes are defined by two dimensions. The tutorial then introduces the concept of adding a third dimension, known as depth, to transform these 2D shapes into 3D shapes, which are solid and have three dimensions. The video concludes with an invitation to explore 3D shapes further.

What is the additional dimension that transforms 2D shapes into 3D shapes?

Can you explain what three-dimensional shapes are?