In this course you will learn all the circle theorems, their meanings as well as the rules we can use to determine angles. Each lesson contains explanations and examples for you to try with a separate answer sheet so you can compare your work with our answers. All theorems are explained in detail so make notes of the important characteristics as we highlight them. This work becomes like a puzzle where you just have to spot the right reason, once you know what each one looks like.We have all done those puzzles where you need to find certain objects hidden among others, well calculating angles is almost like that except if you don’t know what you are looking for, how can you find it? So this course is all about what those rules look like. And of you adhere to the principles and meaning of each theorem you will soon start to see how angles are related to one another in one or more ways. I am also sure that by studying these rules you are given the needed tools to make a success of calculating angles when circles are involved. Remember each lesson teaches one specific rule. Don’t forget them, as you need to draw on all of them to find what you need to calculate. Good luck.