Question

problem 9: given that △ebc≅△cfe, answer this question. △ecf≅____ after you enter your answer press go.

Explanation:

Step1: Recall congruence property

If two triangles are congruent, order of vertices matters. Given $\triangle EBC\cong\triangle CFE$, for $\triangle ECF$, reversing the order of vertices gives $\triangle FEC$. So $\triangle ECF\cong\triangle FEC$.

Answer:

$\triangle FEC$