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Mathematics
Mathematics
Problem
Quadrilateral
P
Q
R
S
PQRS
P
QR
S
satisfies
∠
P
=
∠
R
\angle P = \angle R
∠
P
=
∠
R
. Which additional single condition, when also true, is sufficient to conclude that
P
Q
R
S
PQRS
P
QR
S
is a parallelogram? a)
P
Q
=
R
S
PQ = RS
P
Q
=
R
S
b)
P
R
=
Q
S
PR = QS
P
R
=
QS
c)
∠
Q
=
∠
S
\angle Q = \angle S
∠
Q
=
∠
S
d)
P
Q
∥
R
S
PQ \parallel RS
P
Q
∥
R
S
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