Quadrilateral Surprise!

Автор: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

Нові Ресурси

Function art 3D - waiting shed (v2)
Rovnoběžnost rovin
Slope Illustrator (2)
Basic and Compound Inequality Illustrator
Perpendicular Lines: Quick Exploration

Відкрийте для себе Ресурси

Sample
angle
P.2-PC:A-1 MR.G
Check how fast you can find cross product of two vectors
G.CO.4 and G.CO.5 Challenge Problem

Відкрийте для себе Теми

Симетрія
Піраміда
Числа
Confidence Interval
Тригонометричні Функції