A two-dimensional graphic representation of an object showing a plan, a vertical elevation, and/or a section.
Map projection that presents the Earth's surface in two-dimensions as if it were being observed from a great distance in space. Distortion of areas and angles becomes greater as you move from the center of the projection to its edges.
The method of producing an image or view of an object by projecting points of the object onto an imaginary picture plane such that all projections are at right angles to the picture plane. The importance of this method is that lines of the object that are parallel to the picture plane are true length in the resulting view. They can therefore be drawn to scale.