OpenStudy (anonymous):

∆DEF rotates 90° clockwise about point A to create ∆D'E'F'. Therefore, which equation must be true?

2 years ago
OpenStudy (kiwibyrd):

i think there's some info missing here

2 years ago
563blackghost (563blackghost):

Seems like we need a photo of the graph with the triangles and the equations...

2 years ago
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