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Mathematics
Mathematics
Problem
In
△
A
B
C
\triangle ABC
△
A
B
C
,
D
D
D
is the midpoint of
A
B
AB
A
B
. The line through
D
D
D
parallel to
B
C
BC
B
C
meets
A
C
AC
A
C
at
E
E
E
. Prove that
E
E
E
is the midpoint of
A
C
AC
A
C
.
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