CIR - Circle Basics Lesson

Circle Basics

It is likely that you have learned about circles in the past. However, circles are much more than just a collection of points equidistant from a center point. They have many parts, theorems, and properties that we need to investigate. Before we can get too far into our exploration of circles, we need to have some basic knowledge of how circles work. Please study the presentation below; be sure to take thorough notes as you go through it.

Another important fact to note about circles is that all circles are similar. Remember that similarity means that one figure can be mapped to the other by a series of transformations (translations, rotations, reflections, dilations, etc.). This is, in fact, true of circles. Simply by dilating and sliding or reflecting a given circle, it can be mapped onto any other circle, making them similar to each other.

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