Circle
Theorems

Presentation in Microsoft PowerPoint format. The applet beneath was created in GeoGebra, which is a small, free piece of dynamic geometry software that can be downloaded from: www.geogebra.org

## Introduction and proof of
circle theorems:

A comprehensive
presentation of the
major circle facts
and theorems, beginning with naming the parts of a circle and ending
with geometric proofs of the theorems.

A
collection of resources for learning and understanding circle theorems

Details:Presentation in Microsoft PowerPoint format. The applet beneath was created in GeoGebra, which is a small, free piece of dynamic geometry software that can be downloaded from: www.geogebra.org

Circle Theorems
presentation

## Discovering Circle
Theorems using GeoGebra

Use GeoGebra (free download or online versions available) to
investigate angles within circles. Use the following pdf
documents:

## Circle Theorems Applet

To dive straight into investigating or demonstrating, use
the applet below: move the points around to illustrate the various
theorems. Spot the pairs of equal angles, notice which pairs add up to
180 degrees and learn to appreciate why the circle produces such
special properties.

Introduction to GeoGebra |
Discovering Circle Theorems |
Blanks for Circle Theorems |