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Intro to geometry : grades 5-8

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College geometry; an introduction to the modern geometry of the triangle and the circle

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The Irish Times

Spherical geometry: Going around in great circles to get to the point

The shortest distance between two points is a straight line. This is one of the basic principles of Euclidean geometry.
Nature

The Geometry of Compasses; or, Problems Resolved by the mere Description of Circles, and "the Use of Coloured Diagrams and Symbols"

THIS is only our old friend, “La Geometria del Compasso di Lorenzo Mascheroni” (Paris, 1797), decked out in the manner we ...