Sixth circle theorem

You are here: Home > Maths intro > Circle theorem 6


Home
First page
Theorem 1
Theorem 2
Theorem 3
Theorem 4
Theorem 5
Theorem 6
Theorem 7
The Seven Theorems


Angle between tangent and radius


Sixth circle theorem:

What do you notice about the angle between tangent and radius, α & β?

You can use the cursor to move point C, and you can change the size of the circle by moving point A or B.

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)



If you need them, the seven circle theorems here

Tim Devereux, Created with GeoGebra