Introduction to Geometry: Basic Elements of Geometry

Points

Points are the basic building blocks of geometry.  A point represents a fixed location in space.  It has no dimension.  That means that even though we usually represent a point with a dot, it actually has no length, width, or thickness.

capital letter A with a small dot over it, capital letter B with a small dot over it

Points can be named any capital letters.

capital letter X with a small dot over it, capital letter P with a small dot over It, capital letter N with a small dot over it, capital letter R with a small dot under it

A and B represent different points because they represent different locations.  Notice that when we name points, we use a capital letter.

You may recall from algebra that the location of a point can be given as a set of coordinates
(x, y).  Keep this in mind because we’ll use coordinates later in the course.

How many points are there in one square inch? solution