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

Nowe zasoby

Intersections of y=a^x and y=log(a, x)
Torus
Untitled
အခြေခံ data အခေါ်အဝေါ်များ
Colouring of Venn Diagram

Odkryj zasoby

Axis of symmetry and coefficients of a quadratic
Amplitudenmodulation
Incenter
less.4 dilations # 6
Ngozi triangle homework
Rotations in the Coordinate Plane

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Arytmetyczne
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