Roberto if finding the coordinates of the image of a triangle with vertices A(1,1) B(4,1) C(1,5) after a reflection overthe x axis. Descreib his mistake and correct it. 

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Roberto if judgment the coordinates of the idea of a triangle behind a while vertices A(1,1) B(4,1) C(1,5) behind a reflecting overthe x axis. Descreib his strike and set-right it. 
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