Exercises on Euclid and in modern geometry for the use of schools, private students, and junior university students (1881)
McDowell, James L · Cambridge, Deighton, Bell, and Co. · leaf 171
First, let the two given lines AB, AC intersect in A. Let P be the fixed point. Through P draw the transversalsPDE, PBC, and let the joining lines CD, EB meet in 0. It isrequired to find the locus of 0. Join AP, AO. ^Fhen A . PBOG is an harmonic pencil (169),and its three rays AP, AB, AG are fixed,…
Geometry
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