GeoGebra Dynamic Geometry Problem 903: Second Fermat Point. HTML5 Animation for Tablets (iPad, Nexus), Mathematics Education. Distance learning.

Dynamic Geometry Problem 904: Second Fermat Point. Triangle, Equilateral triangles, Concurrent lines, GeoGebra, HTML5 Animation for Tablets (iPad, Nexus). Levels: School, College, Mathematics Education

Given a triangle ABC (see the dynamic figure below) with the inside equilateral triangles A₂BC, B₂AC, and C₂AB, then the lines AA₂, BB₂, and CC₂ are concurrent at a point F₂, called the Second Fermat point.
See also the static diagram of the Second Fermat point

Dynamic Geometry Environment (DGE) or Interactive Geometry Software (IGS) of the Second Fermat Point
The interactive demonstration above was created with GeoGebra.

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 manipulate the interactive figure: tap and drag points or lines.

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.

Dynamic Geometry Problem 904: Second Fermat Point. Triangle, Equilateral triangles, Concurrent lines, GeoGebra, HTML5 Animation