Quadrilateral Surprise!

Auteur:Tim Brzezinski

How would you put this property (dynamically illustrated below) into words? (Applet works best if quadrilateral is kept convex.) How can you formally prove what this applet informally illustrates?

Quick (Silent) Demo

Nieuw didactisch materiaal

seo tool
Exploring GeoGebra for the First Time
Triangle with 3 Right Angles
Volume by Shells Around y
apec

Ontdek materiaal

Adding and subtracting integers
Melissa Regnasco Geogebra
Parallel & Perpendicular Lines
圖形F

Ontdek onderwerpen

Rationale getallen
Logaritmische Functies
Boomdiagram
Vergelijkingen
Omgeschreven cirkel