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Mathematics
Mathematics
Problem
In
△
A
B
C
\triangle ABC
△
A
B
C
, a line through points
D
D
D
on
A
B
AB
A
B
and
E
E
E
on
A
C
AC
A
C
is drawn parallel to
B
C
BC
B
C
. If
A
D
=
3
cm
AD = 3\,\text{cm}
A
D
=
3
cm
and
D
B
=
9
cm
DB = 9\,\text{cm}
D
B
=
9
cm
, find the ratio
A
E
:
E
C
AE:EC
A
E
:
E
C
.
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