What is 3D shape?

Answer 1

Well, a 3D model or shape means a 3D (looks real) house or tree or even a cube or a sphere. Paper is flat, so things on it are two dimensional (2D). If you change the appearance of a square into a cube by adding extra lines, or a circle into a sphere by clever shading, you're making it look three dimensional (3D). Two dimensional figures have width and length; 3D figures also have height or depth.

Answer 2

A 3D shape is a shape that you can feel as well as see.

3D Shape Examples:

~Sphere (a ball)

~Cube (a dice)

~Cuboid (some mobile phones)

~Cylinder (a tin)

~Cone (an ice-creamcone)

~Pyramid (the Egyptian pyramids)

A 2D shape is a shape that you cannot feel, but you can see.

2D Shape Examples:

~Square

~Circle

~Triangle

~Rectangle

~Oval