which triangle shows the incenter at point a?; if ex = 4z + 1, xf = 2z + 7, and mabc = 44°, find the following measures.; three highways connect the centers of three towns and form a triangle; which is the only center point that lies on the edge of a triangle?; match the location of the point of concurrency with the type of triangle.; point s is the point of concurrency of the angle bisectors of δwxy.; what is the value of n? 6 7 20 59; the circumcenter of an obtuse triangle lies the triangle.