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

Nuevos recursos

Graph of y = ax² + bx + c
Angles of Intersecting Lines
Nikmati Keunggulan Di Bandar Judi Terpercaya
Traffic Cone
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם

Descubrir recursos

littlelandobigewens
SequenceTextDoesNotWork
Thanksgiving Extra Credit Challenge
Bunglon
Exploration
Discovering the Equation of a Line

Descubre temas

Funciones partidas
Triángulos Escalenos
Triángulos
Cuadrado
Prisma