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 44
= half the parallelogram CFGE = the triangle CPE. But the sum of the triangles APB nnd CPD is given, thereforethe sum of the triangles CPE and CPD is also given; but as in(1) the triangle CPE is half this sum, and therefore the triangleCPU has a given area and a given base CH, therefore the locus…
Geometry
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