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

Nous materials

Slope Between 2 Points (Phase 2)
Celsius ↔ Fahrenheit Converter
The Gardener's Ellipse
Untitled
The Gardener's Circle

Descobriu materials

Riemann Sums
Vertical angles
narkaram
Day 20
Vector Perpendicular to TWO Given Vectors, AKA Cross Product

Descobriu Temes

Funcions trigonomètriques
Triangles rectangles
Gràfica d'una funció
Equacions
Càlcul