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AG is not parallel to BF.
Similarly we can prove than neither is any other straight line except AD; therefore
AD is parallel to BF.
Being what it was requaire to prove.
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T H E E L E M E N T S |
Book I Proposition 40 | |
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Therefore AG is not parallel to BF. Similarly we can prove than neither is any other straight line except AD; therefore AD is parallel to BF. Being what it was requaire to prove. |
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