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Chapters on the modern geometry of the point, line, and circle (1865)
Chapters on the modern geometry of the point line and circle - 1865 Author:Richard Townsend Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: of the circle (171, 2), the harmonicism of either, consequently, involves and is involved in that of the other (213); but, by virtue of the general property ... more »of Art. 221, the harmonicism of the latter pencil involves and is involved in that of the row determined by the four points, and therefore« less