Image: Quadrants in descriptive geometry
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Description: Modern orthographic projection is derived from Gaspard Monge's descriptive geometry. Monge defined a reference system of two viewing planes, horizontal H ("ground") and vertical V ("backdrop"). These two planes partition 3D space into 4 quadrants, which he labeled I, II, III and IV.
Title: Quadrants in descriptive geometry
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Author: SharkD
Usage Terms: Public domain
License: Public domain
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