Geometry Revisited
by H. S. M. Coxeter, Samuel L. Greitzer · H.S.M. Coxeter, Samuel L. Greitzer
Classic Mathematical Association of America text on Euclidean geometry beyond the high-school level, covering triangle centers, cyclic quadrilaterals, collinearity and concurrence, power of a point, transformations and inversion, with exercises that prepare readers for olympiad-style geometry problems.
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