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Mathematics
Problem
Remark (External Angle Bisector): In case
A
B
=
A
C
AB = AC
A
B
=
A
C
then external bisector of
∠
A
\angle A
∠
A
is parallel to
B
C
↔
\overleftrightarrow{BC}
B
C
. If
D
D
D
is external to
B
C
‾
\overline{BC}
B
C
then
B
D
D
C
\frac{BD}{DC}
D
C
B
D
can never be 1. Find out why?
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