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Geometry Table of Contents

Introduction to GeoGebra

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GeoGebra is free, multi-platform dynamic mathematics software that joins geometry, algebra and calculus.

What does multi-platform mean?
Multi-platform means it works on both PCs and MACs.

What does dynamic mean?
Dynamic means that the user can interact with the computer.

Where does the name GeoGebra come from?
Take the first three letters of GEOmetry and put it together with the last five letters of AlGEBRA:

GEO	metry
Al	GEBRA

How is it pronounced?
Dr. Fisher pronounces it like Algebra, except with a "Geo" at the beginning. (Both G's are soft.)

Here are names that will be used for various GeoGebra elements.
You must know these names, because they will be used in the tutorials and worksheets.
(Some of these names are ever-so-slightly different than the names that GeoGebra uses.)

GEOGEBRA WINDOW:
TOOLBAR:
MOVE tool:
POINT tool:
LINE tool:
In the pull-down menu beneath the LINE tool:
SEGMENT tool:
PERPENDICULAR LINE tool:
In the pull-down menu beneath the PERPENDICULAR LINE tool:
PARALLEL LINE tool:
POLYGON tool:
CIRCLE tool:
ANGLE tool:
REFLECT ABOUT LINE tool:
SLIDER tool:
MOVE DRAWING PAD tool:
MENU:

Notation like Options-Angle unit-Radians is used to mean the following:
- Click on Options in the MENU.
- In the sub-menu that appears, click on Angle unit .
- In the sub-menu that appears, click on Radians .
ALGEBRA WINDOW:
GEOMETRY WINDOW (or DRAWING PAD):
INPUT FIELD:
DEGREE MENU:
(This menu contains the degree symbol, constants, functions, and relations.
It is called the "degree menu" because that is the symbol that shows.)
GREEK LETTER MENU:
COMMAND MENU:

Please read my
TERMS OF USE