In triangle $DEF$, the measure of angle $D$ is $40^{\circ}$ and the m…

Question

Prompt

In triangle

D E F

, the measure of angle

D

4 0^{\circ}

and the measure of angle

E

9 5^{\circ}

. In triangle

R S T

, the measure of angle

R

4 0^{\circ}

and the measure of angle

S

9 5^{\circ}

. Which of the following additional pieces of information is needed to determine whether triangle

D E F

is similar to triangle

R S T

The measure of angle

F

The measure of angle

T

The measure of side

D E

No additional information is needed.