Quadrilateral Surprise!

Author: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

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z`]]
Taylor Error Bound
အခြေခံ data အခေါ်အဝေါ်များ
bewijs stelling van Pythagoras
Trammel of Archimedes Art

Discover Resources

Recurrence Relations Graphically
Start, Bisect an angle
GEOGEBRA #8
Koordinatform
Modul20-D2_Norindang,S.Pd_SMAN 1 Palangka Raya

Discover Topics

Boxplot
Prism
Geometry
Trigonometric Functions
Geometric Distribution