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SAT Math Practice Question #33457 - SATify | SATify

#33457

congruence

triangle

geometry

easy

45 sec

Triangle $PQR$ is an isosceles triangle with $PQ = QR$ . Which of the following conditions, if true, would be sufficient to prove that triangle $PQR$ is an equilateral triangle?

A.

The measure of angle $P$ is $9 0^{\circ}$

B.

The measure of angle $Q$ is $6 0^{\circ}$

C.

The measure of angle $R$ is $4 5^{\circ}$

D.

The perimeter of triangle $PQR$ is $100$ units