| 单词 | Perspective Triangles |
| 释义 | Perspective TrianglesTwo Triangles are perspective from a line if the extensions of their three pairs of corresponding sidesmeet in Collinear points. The line joining these points is called the Perspective Axis. TwoTriangles are perspective from a point if their three pairs of corresponding Vertices are joined by lines which meet in a point of Concurrence. This point is called thePerspective Center. Desargues' Theorem guarantees that if two Triangles are perspective froma point, they are perspective from a line. See also Desargues' Theorem, Homothetic Triangles, Paralogic Triangles, Perspective Axis,Perspective Center |
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