NCIDQ IDFX Practice Exam

What is unique to axonometric drawings?

1. All dimensions are shown in true scale with no distortion

2. One plane of the object is parallel to the picture plane

3. Foreshortening occurs on the three principal axes of the object

4. It represents real-world objects using a single viewpoint

The correct answer is: Foreshortening occurs on the three principal axes of the object

Axonometric drawings are characterized by the representation of three-dimensional objects on a two-dimensional plane, where the axes of the object are shown at angles to one another. In axonometric projections, foreshortening occurs along the three principal axes, which allows for a visual representation that retains the proportions of the object without perspective distortion. This means that even though the object is depicted in a three-dimensional form, the dimensions along each axis remain in a direct linear relationship, giving a clear understanding of the spatial relationships between the different parts of the object. The distinct feature of axonometric drawings is that they do not rely on a single viewpoint like perspective drawings, where objects appear smaller as they recede into the distance. Instead, axonometric projections maintain the same scale along each axis, allowing for a more accurate representation of dimensions. This characteristic enables a clear understanding of the object's geometry and layout, making them useful in technical illustrations and design documents.