What Is an Autostereogram?

A solid figure is a geometric figure whose parts are not in the same plane. It is a three-dimensional figure surrounded by one or more faces that can exist in real life. Jogging into lines, lines into faces, and faces into bodies. That is to say, the body is surrounded by faces, and if you look at a regular solid figure such as a cuboid, cube, etc., you can see up to three faces of the solid figure. ^[1]

Three-dimensional graphics

A figure whose points are not on the same plane is called a three-dimensional figure.

Surface area of cuboid = 2 × (length × width + length × height + width × height) The symbolic expression is: S = 2 (ab + bc + ca)

The volume of the cuboid = length × width × height is represented by the symbol: V = abh or the bottom area × height is represented by the symbol: V = Sh

Recognize three-dimensional graphics and establish space concepts. Using them can help students intuitively understand the shapes and characteristics of various objects, put together three-dimensional combinations of different shapes by themselves, and can experience the transformation relationship between various geometric bodies by splitting, thereby deepening the understanding of the characteristics of three-dimensional graphics understanding. For example: two cubes can form a cuboid, and a cylinder can be disassembled into two cylinders.