Introduction to GeoGebra - English

1. Instruction Sheet
2. Installation Sheet
3. Report Missing Component
4. Post your Question on the Forum

Outline:
About GeoGebra interface
Menu bar and Geometric tools
Open GeoGebra interface in Ubuntu Linux and windows 10 OS
How to delete objects
Enable and disable grid and axes
Algebra and Graphics views
Change object properties of lines
Draw parallel and perpendicular lines
Dependent and independent objects 
Properties of Graphics view