|1.||a style of engineering drawing in which true dimensions are represented as if projected from infinity on three planes perpendicular to each other, avoiding the effects of perspective|
|2.||a type of zenithal map projection in which the area is mapped as if projected from infinity, with resulting distortion of scale away from the centre|
common method of representing three-dimensional objects, usually by three two-dimensional drawings, in each of which the object is viewed along parallel lines that are perpendicular to the plane of the drawing. For example, an orthographic projection of a house typically consists of a top view, or plan, and a front view and one side view (front and side elevations)
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