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the straight line BC falling on the two straight lines AC, BD has made the alternate angles equal to one another,
AC is parallel to BD. [I.27]
And
it was also proved equal to it.
Being what it was required to prove.
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T H E E L E M E N T S |
Book I Proposition 33 | |
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And since the straight line BC falling on the two straight lines AC, BD has made the alternate angles equal to one another, AC is parallel to BD. [I.27] And it was also proved equal to it. Being what it was required to prove. |
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