polygon triangulation (step 11 : intersection - very degenerated polygons - only one segment per orientation for a point)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31268 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4004: trying this way, documenting for consideration later

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31269 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4004: MathQuill in Spanish: f(x)=arcos(x)+sen(x)+1

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31270 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e