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thus it is necessary to construct a rectilineal angle equal to the rectilineal angle DCE on the straight line AB at the point A.
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T H E E L E M E N T S |
Book I Proposition 23 | |
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Let AB be the given straight line, A be the given point on it, and the angle DCE
be the given rectilineal angle; thus it is necessary to construct a rectilineal angle equal to the rectilineal angle DCE on the straight line AB at the point A. |
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