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Mathematics
Problem
Triangles
A
B
C
ABC
A
B
C
and
D
E
F
DEF
D
E
F
are congruent. If
A
B
=
7
cm
AB = 7\text{ cm}
A
B
=
7
cm
,
B
C
=
5
cm
BC = 5\text{ cm}
B
C
=
5
cm
,
A
C
=
6
cm
AC = 6\text{ cm}
A
C
=
6
cm
,
D
E
=
7
cm
DE = 7\text{ cm}
D
E
=
7
cm
and
E
F
=
5
cm
EF = 5\text{ cm}
E
F
=
5
cm
, find the length of
D
F
DF
D
F
.
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