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

Nouvelles ressources

Model sferyczny - dwunastościan-dwudziestościan
Trefoil Knot
Fourier Lissajous (Mechanical)
seo tool
Rose Curve

Découvrir des ressources

Forum f=2&t=40693 E vectorPlaneADD
Equidistant
The Slope of a Line and the y-Intercept Equation
Some Sequences Are Not Commutative
Hole 2
Spherical Right angled triangle

Découvrir des Thèmes

Triangles Rectangles
Intervalle de Confiance
Trapézoïde
Translation
Pythagore ou Théorème de Pythagore