Which sketch is the most frequently used and portrays all places and objects in one plane as seen from above, with walls and ceilings folded out?

• A. Projection Sketch
• B. Perspective Sketch - Three Dimensional
• C. Legend
• D. Triangulation

Answer: (A)

The main idea here is depicting a space in a single flat view from above, showing how all places and objects relate to one another with walls and ceilings unfolded for clarity. A projection sketch does exactly that: it presents everything on one plane as seen from above, arranging interiors in a way that makes spatial relationships easy to read on a single sheet.

A perspective sketch, by contrast, is three-dimensional and uses depth to imitate how things appear in real space, which spreads features across multiple planes and not all items sit on one flat view. A legend is simply a key to symbols used in drawings, not a drawing style itself. Triangulation is a surveying or mapping method for determining positions using distances and angles, not a type of sketch.