Suckless SAT Practice

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Practice one SAT question at a time

Questions come from the Bluebook question bank.

In triangle $D E F$ , the measure of angle $D$ is $47 degree$ and the measure of angle $E$ is $97 degree$ . In triangle $R S T$ , the measure of angle $R$ is $47 degree$ and the measure of angle $S$ is $97 degree$ . Which of the following additional pieces of information is needed to determine whether triangle $D E F$ is similar to triangle $R S T$ ?