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

Nuevos recursos

Perpendicular Lines: Quick Exploration
Segment Addition Postulate (Mild Questions)
Midpoint Theorem (V2): Integer Solutions
Modifiable Right Triangular Prism
Linear Equation Graphs: Thin Slice

Descubrir recursos

Domain and Range of a Function
relations v functions
Boom
day 113
Inverse Functions

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Cuadriláteros
Simetrías
Distribución geométrica
Figuras planas
Derivada