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Elliptic Trammels and Fagnano Points
Published online by Cambridge University Press: 15 September 2017
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22. To obtain a Fagnano pair of points on an ellipse whose axes are given, it may be considered sufficient to construct the corresponding Fagnano quadrilateral. That is, having drawn the line hk (Fig. 14) with the points p and z marked, and having described a circle on hk as diameter, it is only necessary to draw through z some chord c1c2 and to join the sides of the quadrilateral c1hc2k.
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- Copyright © Mathematical Association 1911