Name: SAT Math Help & School Math Mastery
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#35900

triangle

similarity

geometry

hard

100 sec

In triangles $A BC$ and $D EF$ , $m ∠ B = m ∠ E = 8 0^{\circ}$ . Side $A C = 10$ and side $D F = 15$ . Which additional piece of information is sufficient to prove that triangle $A BC$ is similar to triangle $D EF$ ?

A.

$A B = 8$ and $D E = 12$

B.

$BC = 6$ and $EF = 9$

C.

$m ∠ A = 4 0^{\circ}$ and $m ∠ D = 4 0^{\circ}$

D.

$m ∠ C = 5 0^{\circ}$ and $m ∠ F = 6 0^{\circ}$