Define the word medium as it is used in art.

The material or substance or supplies used. For example, it could be canvas, paint, charcoal, clay, mixed-media, etc.

answeras live actors preforming in the same room as a live audience;

cad, or computer-aided design and drafting (cadd), is a software for design and technical documentation, which is an automated process as opposed to the manual drawing of plans. this gives a person an advance in making plans as an architect in a short period of time. one who can render plans through this software will gain a skill that is better than one who makes plans manually. this is a skill some companies look for in an employee.