Quadrilateral Surprise!

Autor: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

Novi radovi

Rose Curve
Damped Trochoidal Curve
Slope and Road Signs
apec
Model sferyczny - dwunastościan-dwudziestościan

Istraži uratke

Exploring diagonals
Transformations of Basic (Negative) Power Function
unit-circle-sin-cos
Intersect1
אנרגיה תרמית

Otkrij teme

Pravci, polupravci i dužine
Derivacija
Omjeri
Geometrija
Trapez