Go Geometry Education

 
Dynamic Geometry: Lemoine Line of a Triangle. HTML5 Animation for Tablets (iPad, Nexus..) Level: High School, College, Mathematics Education

Dynamic Geometry
The interactive figure above, created with GeoGebra, shows a triangle ABC with the Lemoine Line C1A1B1.
To manipulate the interactive figure: tap and drag points or lines.
To stop/play the animation: tap the icon in the lower left corner.
To reset the interactive figure to its initial state: tap the icon in the upper right corner.
To explore (show / hide): tap a check box.

Lemoine Line
Tangents to the circumcircle of triangle ABC, at points A, B, and C, meet sides BC, AC, and BA at points C1A1, and B1,  respectively. Prove that points C1A1B1 are collinear.
 

Dynamic Geometry: Lemoine Line of a Triangle. HTML5 Animation for Tablets (iPad, Nexus..)
 

GeoGebra
GeoGebra is free and multi-platform dynamic mathematics software for all levels of education that joins geometry, algebra, tables, graphing, statistics and calculus application, intended for teachers and students. Many parts of GeoGebra have been ported to HTML5. It has received several educational software awards in Europe and the USA.

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