This chapter reinforces the topics introduced in the last two chapters, and discusses several new topics.
Point class is convenient for discussing these topics.
But it is not a class that Advanced Placement students are expected to know and outside of this chapter
and the next
these notes do not use it again.
You have seen some of the material in this chapter before. But, don't rush through it. The purpose of this chapter is to review topics that you may still be somewhat unclear about.
In geometry, what is a two dimensional point?