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Geometric Drawings and Constructions

Videos without Words
   

Croatian version 

 

Here you can find videos that show geometric drawings and constructions on paper or in GeoGebra.

Thanks to Rex Boggs, Rockhampton Grammar School, Australia (http://bit.ly/rexboggs) for help with the English translation.

 

  

 

 

  

 

Topics:

>  Parallel Lines

>  Perpendicular Lines

>  Angles

>  Dividing Line Segment

 

 

 

Explanations of the terms "drawing", "construction" and "sketch":

Drawing

When we draw (in geometry) then we are allowed to use a range of geometric tools such as a triangle, straightedge, ruler, compass and a protractor.

 

 

Construction

When we construct, we are only allowed to use a compass and/or a straightedge. Measuring using a ruler or a triangle is not allowed. Transferring a distance or a length can be done with a compass.

 

 

Sketch

To sketch means to draw without any geometrical equipment, using just a pencil. We can sketch when it's not important to have a precise drawing.

 

 

 

 
Webmajstori Thanks to the members of the Webmajstori forum for help with making design of these webpages.
 
Antonija Horvatek Autor of the website