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 49
this proposition and the last DG is parallel toAB and DH to AC, the feet of the perpendiculars from either endof the base on bisectors of internal and external vertical angles,and the middle point of the base lie in the same straight line; alsothe line joining the foot of any of the four… … 20 EXERCISES ON EUCLID [25. 25. Given the three bisectors of the sides of a triangle;construct it. Suppose ABC the required triangle, and let the bisectors of itssides intersect in G so that GD is halfAG (5). Produce AD until DH^DG,and join HC. The two triangles BDG and CDHhave the sides BD and DC,…
Geometry
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