How to define and construct an angle bisector.
How to construct a midpoint and how to define a perpendicular bisector.
How to label an angle bisector; how to use an angle bisector to find a missing variable.
How to relate the sides of an angle bisected and the lengths of the opposite side.
How to relate corresponding altitudes, medians and angle bisectors in similar triangles.
How to define a chord; how to describe the effect of a perpendicular bisector of a chord and the distance from the center of the circle.
How to define a rhombus and compare it to a square and rectangle.
How to construct the incenter using a compass and straightedge.
How to construct the circumcenter using a compass and straightedge.
How to identify a segment from the vertex angle in an isosceles triangle to the opposite side.
How to define point of concurrency; how to identify the four main points of concurrency in triangles.
How to define a rectangle and a square.