Tag Archives: GeoGebra segment between two points tool

GeoGebra Essentials 4 – Angles, Lengths and Object Properties

Posted on October 15, 2010 by Guillermo Bautista | 5 Comments

This is the fourth tutorial in the GeoGebra Essentials Series. If you are not familiar with GeoGebra, you may want to read the Introduction to GeoGebra post and earler tutorials. It contains the pre-requisites of this tutorial.

In the tutorial below, menu commands, located in the menu bar, are in brown bold text, and submenus are denoted by the > symbol. For example, Options>Labeling> New Points Only means, click the Options menu, choose Labeling from the list, then select New Points Only. The GeoGebra tools are denoted by orange texts. For example, New Point means the new point tool.

In this tutorial, we use GeoGebra to investigate if a relationship exists between the interior angles of a triangle and the lengths of its sides. We also learn two new tools – the Angle and the Distance or Length tool. In addition, we discuss how to change the basic properties (color, width, and style) of mathematical objects. The output of our tutorial is shown above. Continue reading →

→ 5 Comments

Posted in GeoGebra, Software Tutorials

Tagged angle sum theorem, GeoGebra Angle tool, geogebra distance or length tool, GeoGebra move tool, GeoGebra object properties, GeoGebra segment between two points tool, sum of the interior angles of a triangle

GeoGebra Essentials 2 – Constructing a Rectangle

Posted on September 24, 2010 by Guillermo Bautista | 4 Comments

This is the second tutorial in the GeoGebra Essentials Series. If this is your first time to use GeoGebra, it is important that you read the Introduction to GeoGebra post. It contains the pre-requisite of this tutorial. It is also important to read the GeoGebra Essentials 1. This tutorial is just a repeat of the GeoGebra Basic Construction 5, but I have put a more thorough discussion on free, semi-free and independent objects.

In the tutorial below, menu commands, located in the menu bar, are in bold text, and submenus are denoted by the > symbol. For example, Options>Labeling> New Points Onlymeans, click the Options menu, choose Labeling from the list, then New Points Only. The tool texts are colored light red. For example, New Point means, the New Point tool. Continue reading →

→ 4 Comments

Posted in GeoGebra, Software Tutorials

Tagged geogebra constructing a rectangle, GeoGebra intersect two objects, geogebra parallel line tool, geogebra perpendicular line tool, geogebra segment between two points, GeoGebra segment between two points tool, geogebra show/hide object

GeoGebra Tutorial 29 – Animation, Roses and Radian

Posted on September 10, 2010 by Guillermo Bautista | 2 Comments

Note: Although this is the 29^th of the GeoGebra Tutorial Series, just like other Intermediate GeoGebra tutorials, it is independent from others. This means that you can follow this tutorial step-by-step even without learning the previous twenty eight tutorials.

In this tutorial, we are going to introduce the concept of radian. One radian is equal to the subtended angle of the arc with the same length as the circle’s radius. We are going to rotate radius AB’ about point A, the center of the circle. As the point rotates, point C goes back and forth from A to B’ at the same speed. The path of point C forms petals (see red petals in the figures below). The ratio of the maximum number of petals formed and the number of rotations is a good approximation of $\pi$ Instructions

If you want to follow this tutorial step-by-step, you can open the GeoGebra window in your browser by clicking here. The output applet of this tutorial can be viewed here. Continue reading →