Quadrilateral Surprise!

ForfatterTim 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

Nye Materialer

רישום חופשי
Derivative and Differential - A Geometric Point of View
Erdős's problem #503, n=3
Subtracting Hours and Minutes - Practice
seo tool

Opdag Ressourcer

grafik
Mini Project
JavaScript API Example: registerAddListener()
Estudo das secções do cubo
MAPA - Álgebra Linear - 2017
Angle Relationships

Udforsk emner

Subtraktion
Binomialfordeling
Division
Cylinder
Omskreven cirkel