descriptive geometry

the theory of making projections of any accurately defined figure such that its projective as well as its metrical properties can be deduced from them.
geometry in general, treated by means of projections.

1815–25 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
descriptive geometry
the study of the projection of three-dimensional figures onto a plane surface

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
Principles of descriptive geometry and construction drawings are emphasized.
The proportional drawing then becomes an optics problem to be solved by descriptive geometry and spherical trigonometry.
Formal instruction was given in mathematics from arithmetic through descriptive geometry and conic sections.
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