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it is a square; [I. Def.22]
and
it has been inscribed in the circle ABCD.
Therefore in the given circle the square ABCD has been inscribed.
Being what it was required to do.
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T H E E L E M E N T S |
Book IV Proposition 6 | |
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The quadrilateral ABCD was proved equilateral and right-angled, therefore it is a square; [I. Def.22] and it has been inscribed in the circle ABCD. Therefore in the given circle the square ABCD has been inscribed. Being what it was required to do. |
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