Special Points that Construct Euler's Line
This applet allows the student to examine a triangle's circumcenter, centroid and orthocenter. It's animation can instantly show students different triangles and where these special points will lie with a given triangle. Furthermore, Euler's line is also shown.
Play applet to see different triangles. Which points will lie inside, on or outside the triangle? How are these special points made? Will these points ever lie on top of each other? What type of triangle?