GoGeometry Action 63!

Author:Tim Brzezinski

Creation of this applet was inspired by a tweet from Antonio Gutierrez. Feel free to move any of the triangle's vertices anywhere you'd like. How can we formally prove what is informally illustrated here?

Quick (Silent) Demo

New Resources

koch tool
Domino Chain Reaction
Function Art 3D - Pawn
Untitled
The Cosine Formula - Proof Without Words

Discover Resources

Four colour theorem
Corresponding
Limiting Process of differentiating the curve y=x^4-3x^2
Geo. Project

Discover Topics

Linear Functions
Angles
Secant Line or Secant
Circumcircle or Circumscribed Circle
Trapezoid