T H E E L E M E N T S |
Book VI Proposition 32 | |
And, since ABC, DCE are two triangles having one angle, the angle at A equal to one angle, the angle at D, and the sides about the equal angles proportional, so that as BA is to AC, so is CE toDE, therefore the triangle ABC is equiangular with the triangle DCE; [VI.6] therefore the angle ABC is equal to the angle DCE. |
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