The document provides instructions for performing a 90 degree counter-clockwise rotation of a triangle about the point (5,1). The instructions are: 1) Draw a line from the point of rotation (5,1) to a vertex of the triangle. 2) Trace the triangle, point of rotation, and line connecting them. 3) Draw a line 90 degrees counter-clockwise from the point of rotation. 4) Use the new line as a guide to trace the rotated triangle.