Changes

The above set of images show how to measure angles in Geogebra.  

The above set of images show how to measure angles in Geogebra.  

====Using the input bar====

====Typing text in a textbox====

<gallery mode="packed" heights="250px" caption="Using the input bar">  

<gallery mode="packed" heights="250px" caption="Using the text box">  

File:Geogebra_11_input_bar.png

File:Geogebra_12_defining_angle.png

File:Showing symbols in textbox.png

File:using defined objects.png

 

</gallery>

</gallery>

In Geogebra, all the constructions you can do using the tool bar can also be done with definitions on the input bar.  The input bar also follows the same mathematical conventions used in the tool bar.

 

#Input bar for calculations: The second image shows how to use the input bar for defining variables and values for parameters.  You can also use this space as a calculator for values and properties being shown in the construction.  In this image the angle sum of the quadrilateral is being calculated in the input bar.

The textbox is used to write descriptive text in a Geogebra file.  The first image shows you the option in the tool bar which will be used to insert a text box.  After selecting the text box option, you can click anywhere on the graphics pad to insert the text box. The next two images show how symbols and prior defined objects can be inserted.  For example, in the third image, the "α" object is a prior defined object - the angle measure. This feature allows the text box to dynamically capture the changes in the Geogebra file.

====Using the tool bar - slider====

====Using the tool bar - slider====