What type of drawings are known as projection drawings?

Projection drawings are technical representations that aim to provide accurate and detailed views of an object from different perspectives. Isometric and orthographic projections fall under this category, where the emphasis is on maintaining proportions and allowing for precise measurements. In isometric drawings, the object is depicted at an angle, giving a three-dimensional view on a two-dimensional surface, while orthographic drawings separate different views (such as front, top, and side) into distinct illustrations. This clarity and accuracy are essential in fields like engineering and architecture, where exact specifications are critical for manufacturing and construction.

The other options do not fit the definition of projection drawings. Freehand and conceptual drawings tend to focus more on initial ideas or artistic expression rather than precise representation. Drawings created with computer-aided design software may include projection techniques, but not all CAD drawings are projection drawings. Artistic interpretations prioritize creative flair over technical accuracy, which contradicts the fundamental purpose of projection drawings to convey exact dimensions and relationships between parts.