A school geometry. containing the substance of Euclid books II anfd III and part of book IV (1917)
Hall, H. S. (Henry Sinclair), 1848-1934, Stevens, F. H. (Frederick Haller), 1852-1933 · London : Macmillan · leaf 76
PROBLEMS ON TRIANGLES AND CIRCLES. 19a Problem 25. To draamscnhe a circle about a given triangle. … Let ABC be the triangle, about which a circle is to bedrawn. Constniction. Bisect AB and AC at rt. angles by DS andES, meeting at S. Proh. 2. Then S is the centre of the required circle. Proof. Now every point in DS is equidistant from Aand B; Prob. 14. and every point in ES is equidistant from A…
Geometry
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