Answer:
Computer Aided Design (CAD)
Step-by-step explanation:
For design purpose and rapid prototyping, we use a software known as Computer Aided Design abbreviated as CAD.
Several production formates that are used in CAD are .stp, .stl, .igs, .step where formats like .stp, .igs and .step are used for rapid prototyping and format like .stl is used for design.
The information depending on the extensions used can be modeled in the 3-D files. The most frequent software used for prototyping are: AutoCAD, SolidWorks, SketchUP, etc
This also allows the spatial manipulation, dimension measurement and the visualization of the inner and outer parts.