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Mathematics
Mathematics
Problem
Triangle
P
Q
R
PQR
P
QR
is drawn inside a circle such that
P
R
PR
P
R
is a diameter. Which angle of the triangle measures
90
∘
90^{\circ}
9
0
∘
? a)
∠
Q
P
R
\angle QPR
∠
QP
R
b)
∠
P
Q
R
\angle PQR
∠
P
QR
c)
∠
P
R
Q
\angle PRQ
∠
P
R
Q
d) None of these
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