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Mathematics
Mathematics
Problem
Quadrilateral
P
Q
R
S
PQRS
P
QR
S
has diagonal
P
R
PR
P
R
such that
△
P
Q
R
≅
△
R
S
P
\triangle PQR \cong \triangle RSP
△
P
QR
≅
△
R
S
P
. Prove that
P
Q
R
S
PQRS
P
QR
S
is a parallelogram.
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