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

Volume by Shells Around y
Reflection across a line
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Triangle with 3 Right Angles
seo tool

Descubrir recursos

Changing the coefficients of a sinusoid
Sangaku Gumma 1803
forum
Quadratics and Discriminant
'between-ness' in multiplication/division
ความน่าจะเป็น

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