T H E E L E M E N T S |
Book I Proposition 23 | |
On the straight lines CD, CE respectively let the points D, E be taken at random; let DE be joined, and out of three straight lines which are equal to the three straight lines CD, CE, DE let the triangle AFG be constructed in such a way that AF is equal to CD, AG to CE, and further FG to DE. [I.22] |
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