What does a perpendicular bisector look like?
What does an angle bisector look like?
Median of a triangles side?
Altitude of a triangle?
2.angle bisector divided an angle into two equal parts http://www.mathwords.com/a/a_assets/...20bisector.gif
3.a median is a line drawn from the vertex of the triangle to the midpoint of the opposite side http://www.vias.org/comp_geometry/im...n_centroid.gif
note: there are three medians in a triangle, which all intersect at the same point
4.the altitude is a line going from a vertex of the triangle to the opposite side to the line is perpendicular to the side http://www.geogebra.org/en/wiki/imag...udePicture.jpg