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

New Resources

Traffic Cone
Graph of y = ax² + bx + c
seo tool
Sketching Vector Function (1)
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Discover Resources

Standard form and vertex form
LeWitt Lines
คิดเลขเร็ว
parcialCalculo02
Gabimi në matje!

Discover Topics

Volume
Difference and Slope
Standard Deviation
Statistics
Algebra