Triangle 2 is a reflection of triangle 1.
Triangle 1 has coordinates A (1, 5), B (3, 5) and C (1, 2).
Triangle 2 has coordinates A' (5, 1), B' (5, 3) and C' (2, 1).

Question

Triangle 2 is a reflection of triangle 1.
Triangle 1 has coordinates A (1, 5), B (3, 5) and C (1, 2).
Triangle 2 has coordinates A' (5, 1), B' (5, 3) and C' (2, 1).

anonymous · Answer

Which line is triangle 1 reflected over?

anonymous · Answer

y axis or x axis??

accessdenied · Answer

It isn't reflected over one of the axes.  If you graph the points, you can kind of get an idea of where the line would be.

accessdenied · Answer

You could also consider the fact that when you reflect a point over a line of symmetry, it remains at an equal distance from the line and also that the segment formed is perpendicular to that line.

anonymous · Answer

so x=y

accessdenied · Answer

Yes, that would be the line. :)
 (Usually I see it stated as y=x, which is just the same thing written backwards)

anonymous · Answer

@AccessDenied  Thanks for your help :)

accessdenied · Answer

You're welcome.  :)