What is the length of BC undergoes a reflection over the y-axis ?

The reflection of a point over the y-axis involves changing the sign of the x-coordinate while keeping the y-coordinate the same.

So, the coordinates of the reflected points would be:
A' = (-5,2)
B' = (-2,5)
C' = (-2,2)

To find the length of BC after reflection, we use the distance formula:
Length of BC = sqrt((x2-x1)^2 + (y2-y1)^2)
Length of BC = sqrt((