Using your compass and straightedge in the triangle below, bisect the three vertex angles, find the incenter, drop a perpendicular from the incenter to a side to locate a point on the incircle, construct the incircle, construct the perpendicular bisectors of the three sides to find the circumcenter, construct the circumcircle, draw the three medians to find the centroid, draw the three altitudes to find the orthocenter, draw the Euler line, find the midpoint of the Euler line and construct the 9 point circle.