GeoGebra
special points in a triangle
incircle and excircles of a triangle
a triangle
nine-point circle
nagel point
gergonne point
miquel's triangle theorem
first brocard point
lemoine point
exeter point
vecten points
feuerbach's point
properties of the altitudes
GeoGebra
special points in a triangle
Author:
sonom
incircle and excircles of a triangle
a triangle
nine-point circle
nagel point
gergonne point
miquel's triangle theorem
first brocard point
lemoine point
exeter point
vecten points
feuerbach's point
properties of the altitudes
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