GoGeometry Action 126!

Author:Tim Brzezinski

Creation of this applet was inspired by a problem posted by Antonio Gutierrez (GoGeometry). You can move the 4 LARGE POINTS anywhere you'd like AT ANY TIME. How can we formally prove what is dynamically illustrated here?

Quick (Silent) Demo

New Resources

Perimeter of a Rectangle with Unknown Sides
Untitled
Open Education 2026
The Coordinate Plane (Cartesian Plane)
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Discover Resources

Toggle-able Diagonals
Domain and Range of a Function by Flattening to the Axis
Rotations & Reflections HW
Construction

Discover Topics

Step Functions
Sequences and Series
Histogram
Definite Integral
Differential Calculus