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Mathematics
Mathematics
Problem
In
△
A
B
C
\triangle ABC
△
A
B
C
, points
D
D
D
and
E
E
E
lie on
A
B
AB
A
B
and
A
C
AC
A
C
respectively. If
A
D
=
4
cm
AD = 4\,\text{cm}
A
D
=
4
cm
,
D
B
=
6
cm
DB = 6\,\text{cm}
D
B
=
6
cm
,
A
E
=
5
cm
AE = 5\,\text{cm}
A
E
=
5
cm
and
E
C
=
8
cm
EC = 8\,\text{cm}
E
C
=
8
cm
, decide whether
D
E
DE
D
E
is parallel to
B
C
BC
B
C
. Give a brief reason.
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