Reflect the x axis A B C D

see explanation

Step-by-step explanation:

Under a reflection in the x- axis

a point (x, y ) → (x, - y ) , then

A (- 1, - 17 ) → A' (- 1, 17 )

B (0, - 12 ) → B' (0, 12 )

C (- 5, - 11 ) → C' (- 5, 11 )

D (- 6, - 16 ) → D' (- 6, 16 )

Just draw 3 non parallel lines. These paths will form a triangle with vertices A, B, C. So you know that the angles have to add up to 180.  

Step-by-step explanation: I HAD A DIFFICULT TIME DOING THIS ON PLATO I'LL COME BACK WITH AN UPDATE TO SEE IF ITS CORRECT. ( I HOPE I HELP FOR NOW)