Is ABC similar to DEF? Why or why not?

http://media.apexlearning.com/Images/201310/23/0f5e15db-3767-43ac-899e-e683879fd0b1.jpg

A. No, because not all the angles are congruent.
B. Yes, because the angles are congruent and the sides are proportional.
C. Yes, because the angles are close enough and the sides are proportional.
D. We cannot tell because the third side is not given.

Question

Is ABC similar to DEF? Why or why not? 

http://media.apexlearning.com/Images/201310/23/0f5e15db-3767-43ac-899e-e683879fd0b1.jpg

		A.	No, because not all the angles are congruent.
 		B.	Yes, because the angles are congruent and the sides are proportional.
 		C.	Yes, because the angles are close enough and the sides are proportional.
 		D.	We cannot tell because the third side is not given.

welshfella · Answer

check the values of the corresponding angles 
for example <A and < D
If any are different the triangles are not similar