List three types of concept sketches. 2. State two reasons why sketches are important in design processes. 3. Explain the following: (i) line quantity of weight (ii) line consistency

Three types of concept sketches are:

• Ideation sketches
• Thumbnail sketches
• Refinement sketches

Two reasons why sketches are important in the design process are:

• They allow for rapid visualization and iteration of ideas, enabling designers to explore multiple solutions quickly.
• They serve as an effective tool for communicating design concepts to others, facilitating feedback and collaboration.

Line weight refers to the thickness or darkness of a line in a drawing. It is used to create visual hierarchy, define forms, and convey depth, making certain elements appear closer or more prominent.

Line consistency means maintaining a uniform character, thickness, and style of lines throughout a sketch. This ensures clarity, readability, and a professional appearance, making the drawing easy to understand.