Cut-The-Knot Action (4)!

Område(n):Kvadrat

Creation of this applet was inspired by a tweet from Alexander Bogomolny (cut-the-knot.org). How can you formally prove what this applet informally illustrates?

Quick (Silent) Demo

Nya resurser

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巧算長方形周界
Angle Bisector: Quick Warm Up Questions
AI for worksheet development
Parallel Lines and Angles: Thinking Classroom Exploration

Upptäck resurser

Toiston testaaminen
Triangle sides/angles measure
Exercise 5
Translation, Reflection
Problema del hilo

Undersök matematisk områden

Parallellogram
Linjära funktioner
Räta linjer
Sekant
Integraler