Using Geogebra, draw a triangle. a. Using the midpoint tool and line segment tool, draw the three medians. Click and drag a vertex of the triangle to see how it affects the centroid (the intersection point of the medians). b. Using the angle bisector tool in Geogebra, draw the three angle bisectors of the triangle. Click and drag a vertex of the triangle to see how it affects the incenter (the intersection point of the angle bisectors). c. Using the midpoint tool and the perpendicular line tool, draw the three perpendicular bisectors of the triangle. Click and drag a vertex of the triangle to see how it affects the circumcenter (the intersection point of perpendicular bisectors).