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Mathematics
Mathematics
Problem
In
△
P
Q
R
\triangle PQR
△
P
QR
,
M
M
M
is the midpoint of
P
Q
PQ
P
Q
and
N
N
N
is the midpoint of
P
R
PR
P
R
. A line through
M
M
M
parallel to
P
R
PR
P
R
meets
Q
R
QR
QR
at
S
S
S
. If
P
R
=
10
cm
PR = 10\,\text{cm}
P
R
=
10
cm
, find the length of
M
S
MS
M
S
.
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