How to Use This Chapter

Maybe you already know all the plane geometry you need. You can find out by taking the Plane
Geometry Diagnostic Test. The six plane geometry questions on the Diagnostic Test are typical of
the Mathematics subject tests. Check your answers using the answer key following the test. No
matter how you score, don’t worry! The answer key also shows where to find a detailed explanation
for each question. The “Find Your Study Plan” section that follows the test will suggest the next
steps based on your performance on the Diagnostic.

FIND YOUR LEVEL

How you use this chapter really depends on how much time you have to prep. Find your level and
pace below.

Standard Plan. No matter how well you do on the Plane Geometry Diagnostic Test, read the rest of
this chapter and do all the practice problems.

Shortcut:   Take    the Plane   Geometry    Diagnostic  Test    and check   your    answers.    If  you can answer  at

least   four    of  the six questions   correctly,  then    you already know    the material    in  this    chapter well

enough  to  move    on.

Panic Plan. Take the Plane Geometry Diagnostic Test and check your answers. The material in this
chapter is vital. Don’t try to move on to solid geometry, coordinate geometry, or trigonometry until
you feel comfortable with the material in this chapter.