H
E
E
L
E
M
E
N
T
S
therefore
AB is equal to DE,
and
AD to BE. [I.34]
But
AB is equal to AD;
therefore
the four straight lines BA, AD, DE, EB are equal to one another.
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T H E E L E M E N T S |
Book I Proposition 46 | |
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ABED is a parallelogram; therefore AB is equal to DE, and AD to BE. [I.34] But AB is equal to AD; therefore the four straight lines BA, AD, DE, EB are equal to one another. |
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