NOTABLE POINTS OF THE TRIANGLE:


CIRCUMCENTER, INCERTER, ORTHOCENTERResultado de imagen de triangle circumcenter incenter


The INCENTER and CIRCUMCENTER of an EQUILATERAL TRIANGLE are in the exact same point.
Resultado de imagen de triangle circumcenter incenter 


Paper folding - the perpendicular bisectors of a triangle

 

  http://www.regentsprep.org/regents/math/geometry/gc3/perpacute.gif


 

Paper folding - the angle bisectors of a triangle

 

http://www.regentsprep.org/regents/math/geometry/gc3/bisectoracute.gif