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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?
GeoGebra
Quick (Silent) Demo
New Resources
functionartculture
दुई-ओटा समुहको संयोजन (Union of two sets)
Special Solid Trace
Untitled
အခြေခံ data အခေါ်အဝေါ်များ
Discover Resources
SCCTM Conference
Sri Yanthra
zmogeliukas
test
Adding Fractions with Like and Unlike Denominators
Discover Topics
Geometry
Integral Calculus
Planes
Solids or 3D Shapes
Means