An elementary treatise on modern pure geometry (1893)
Lachlan, Robert · London, New York, Macmillan and Co. · leaf 148
move on a fixed straight line, the vertex C will movealong another straight Une. Show also that if the locus of 5 be a circle, then the locus of C will alsobe a circle. Ex. 4. If ABC, ABC be two triangles which are directly similar, and ifthe triangle ABC be turned about any point in its plane,… … 9—2 132 CENTRE OF SIMILITUDE suppose that BC passes through B. Then, the centre of similitude 0 will bethe point of intersection of the circle circumscribing the triangle BCC\ andthe circle which passes through B and touches BC at B. Again, if C coincide with the point B, the centre of similitude…
Geometry
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