T H E E L E M E N T S |
Book I Proposition 22 | |
Let there be set out a straight line DE, terminated at D but of infinite length in the direction of E, and let DF be made equal to A, FG equal to B, and GH equal to C. [I.3] With center F and distance FD let the circle DKD be described; again, with center G and distance GH let the circle HKH be described; and let KF, KG be joined; I say that the triangle KFG has been constructed out of three straight lines equal to A, B, C. |
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