This 15 page packet includes parts of triangles: median, altitude, perpendicular bisector, and angle bisector. There are definitions, notes and examples of the centers: centroid, incenter, circumcenter, and orthocenter. There is a practice test (w/ solutions) that applies these concepts -- as well as linear equations, midpoint, and slope.. If you would like to pay for this packet, we appreciate your support! (Proceeds go to TES and the mathplane site.).. Or, you can check out more free geometry content at mathplane. Thanks for visiting!