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 63
3* EXERCISES ON EUCLID [52. … 52. If the opposite angles of a quadrilateral be supple-mental, it is circumscribable by a circle. Let the quadrilateral A BCD have its opposite angles B and Dsupplemental, and, if possible, let the circlecircumscribing the triangle ADC not passthrough B, but cut AB or A B produced in E.Join EC.…
Geometry
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