Euler Line Surprise! = GoGeometry Action 54

Author:: Tim Brzezinski

Topic:: Orthocenter

Creation of this applet was inspired by a post from Antonio Gutierrez (GoGeometry). How can we formally prove what this applet informally illustrates?

New Resources

Line Reflection Questions
Compound Interest Modeling and Questions
Reflecting about Y = X and Y = -X (Ver 2)
Pen Holder
Reflecting about Y = X and Y = -X (Ver 1)

Discover Resources

Portugal is great
ellipse/hyperbola reflection
TriangOrtico_Eucl
Untitled
Benjamin_Lee Angle Bisector

Discover Topics

Tangent Function
Rotation
Optimization Problems
Similar Triangles
Median Line