3D, in English, is short for three-dimensional.
A three-dimensional object possesses length, width, and depth, allowing it to be rotated in space. This contrasts with a two-dimensional (2D) object, which is flat and only has length and width.
Here's a breakdown:
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Three Dimensions: Refers to the spatial dimensions of length, width, and height (or depth). These three dimensions define the volume of an object.
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Examples of 3D Objects:
- A planet
- A human being
- A cube
- A building
- Furniture
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Examples of 2D Objects:
- A photograph
- A painting on a flat canvas
- A sheet of paper (ideally, but it does have some small amount of depth)
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3D in Technology: The term "3D" is also commonly used in technology to refer to:
- 3D graphics: Computer-generated images that appear to have depth and volume. This is used in video games, movies, and virtual reality.
- 3D printing: A manufacturing process that builds three-dimensional objects layer by layer from a digital design.
In essence, "3D" signifies that something has depth, allowing it to be perceived or represented in a three-dimensional space.
