## Description

[*The image above illustrates Thales Theorem, the very first theorem ever proved. It says that any angle inscribed in a semi-circle will be a right angle.*]

The revised course now contains a complete digital copy of the textbook, *Geometry: A Guided Inquiry*, by G. D. Chakerian, Calvin D. Crabill, and Sherman K. Stein, an introductory video for each chapter, a complete pdf solution guide to all problems in the Central and Project sections of the text, a video solution guide to the Review sections, commentary, extensions, and over 200 dynamic demonstrations, using *GeoGebra (Classic Edition, Ver 5)*. *GeoGebra* is available (free download) from the website **GeoGebra.org**.

**All Math Without Borders courses are now available for immediate digital download.**