Rough drawings of ideas used to convey or refine the idea are called?

• A. Sketches
• B. Prototypes
• C. Surface modelling
• D. Scale drawings

Answer: (A)

Rough drawings used to convey or refine an idea are sketches. They are quick, freehand representations that capture form, layout, and concept without worrying about precise details or measurements. Sketches let designers explore multiple options rapidly, communicate ideas to teammates, and iterate early before committing to more detailed work. They differ from prototypes, which are tangible models built to test and refine a design; from surface modelling, which is a CAD approach focused on creating smooth geometric surfaces; and from scale drawings, which are accurate representations at reduced or enlarged sizes used for manufacturing and specifying dimensions. The essence of sketches is speed and flexibility—a visual shorthand to brainstorm and share concepts.