Which projection method represents three-dimensional objects on a plane having only length and breadth?

Which projection method represents three-dimensional objects on a plane having only length and breadth?

• A. Cabinet Pictorial
• B. Cavalier Pictorial
• C. Orthographic Projection
• D. Leader Line

Answer: (C)

In engineering drawings, you distinguish between methods that show a convincing 3D look and those that preserve true sizes in two directions. Orthographic projection maps the object onto a drawing plane with lines perpendicular to that plane, so the image on that plane contains only two dimensions—length and breadth. The third dimension isn’t shown in that single view; instead, engineers supply separate views (like front, top, and side) to convey all three dimensions accurately. That’s why this method represents three-dimensional objects on a plane having only length and breadth. Pictorials such as cabinet and cavalier show depth directly in a single view, and a leader line is just for annotations, not a projection method.

In engineering drawings, you distinguish between methods that show a convincing 3D look and those that preserve true sizes in two directions. Orthographic projection maps the object onto a drawing plane with lines perpendicular to that plane, so the image on that plane contains only two dimensions—length and breadth. The third dimension isn’t shown in that single view; instead, engineers supply separate views (like front, top, and side) to convey all three dimensions accurately. That’s why this method represents three-dimensional objects on a plane having only length and breadth. Pictorials such as cabinet and cavalier show depth directly in a single view, and a leader line is just for annotations, not a projection method.