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| Englisch | Russisch |
| central projection | центральное проектирование (геометрия: In plane projections, a series of points on one plane may be projected onto a second plane by choosing any focal point, or origin, and constructing lines from that origin that pass through the points on the first plane and impinge upon the second (see illustration). This type of mapping is called a central projection  britannica.com dennis890) |