The test will not cover the Euler Line nor Thales' theorem (in your study guide for fun :) ) and you will probably NOT have to find the incenter of a triangle algebraically- just with compass and straightedge.
BRING YOUR COMPASS AND STRAIGHTEDGE TO CLASS!!
Make sure you can write the definitions for:
point of concurrency, median, altitude, perpendicular bisector, angle bisector (of triangles, of course!), centroid, incenter, circumcenter, orthocenter.
Know the arcs necessary for the constructions of all of the above terms.
You will need the following algebra tools (know when and why you use them!):
Midpoint Formula, Slope Formula, Equation of a line (point-slope form or slope-intercept form).
LABEL and narrate all of your algebra work.