The vertices of a triangle are the points of intersection of the line $y = -x-1$, the line $x=2$, and $y = x +2$. Find the center of the circle passing through all three vertices.
The triangle formed will be a right triangle with the right angle at (-1.5, .5 )
In this case, the circle passing through all three vertices will lie at the midpoint of (2,4) and (2,-3) = (2, .5)
