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Mathematics
Mathematics
Problem
In
△
A
B
C
\triangle ABC
△
A
B
C
,
A
B
=
A
C
AB = AC
A
B
=
A
C
. The bisector of
∠
A
\angle A
∠
A
meets
B
C
BC
B
C
at
D
D
D
. Prove that
B
D
=
D
C
BD = DC
B
D
=
D
C
.
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