单词 | Casey's Theorem |
释义 | Casey's TheoremFour Circles are Tangent to a fifth Circle or a straight Line Iff where is a common Tangent to Circles and .See also Purser's Theorem
Johnson, R. A. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Boston, MA: Houghton Mifflin, pp. 121-127, 1929. |
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