Video Transcript
What is the image of triangle ๐น๐ท๐ฟ under reflection in line ๐ธ๐น?
Letโs start this question by finding triangle ๐น๐ท๐ฟ, which is marked here in orange on our diagram. Next, our line ๐ธ๐น, which we can mark in pink on our diagram. To find the image then, we need to see what shape will be created by this line of reflection.
The point ๐ท would be reflected to give us point ๐ถ. Our point ๐น lies on the line of reflection, so it will be its own image. And the same will be true of point ๐ฟ. The image that will be created will have the same shape as triangle ๐น๐ท๐ฟ. Therefore, the image of triangle ๐น๐ท๐ฟ under reflection in line ๐ธ๐น is triangle ๐น๐ถ๐ฟ.
