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Mathematics
Mathematics
Problem
In
△
A
B
C
\triangle ABC
△
A
B
C
,
D
D
D
and
E
E
E
are the midpoints of sides
A
B
AB
A
B
and
A
C
AC
A
C
, respectively. State (i) the positional relation between
D
E
DE
D
E
and
B
C
BC
B
C
, and (ii) the value of
D
E
B
C
\dfrac{DE}{BC}
B
C
D
E
.
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