| 单词 | Douglas-Neumann Theorem |
| 释义 | Douglas-Neumann TheoremIf the lines joining corresponding points of two directly similar figures are divided proportionally, then the Locus ofthe points of the division will be a figure directly similar to the given figures.
Eves, H. ''Solution to Problem E521.'' Amer. Math. Monthly 50, 64, 1943. Musselman, J. R. ``Problem E521.'' Amer. Math. Monthly 49, 335, 1942. |
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