It seems like you're asking about a geometric transformation, specifically involving a pre-image triangle $\triangle ABC$ and its transformed image $\triangle DEF$. However, I would need more specific information or a file (such as "1-4.png") to better understand the problem and provide a detailed solution.

You can upload the image or give more details about the transformation.

Let me know if you'd like to proceed with an upload or provide more context for the question!