Cut-The-Knot Action 9!

Author:Tim Brzezinski

Creation of this applet was inspired by a tweet from Alexander Bogomolny. Note the rectangles shown are similar to each other. How can you formally prove what this applet informally illustrates?

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Pendule 002
Introduction to Matrix Transformations
အခြေခံ data အခေါ်အဝေါ်များ
seo tool
apec

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Investigating Quadratic Graphs in Factorised Form
Theorem 1: Chords are Congruent iff...
Sudut-sudut Berpelurus dan Bertolak Belakang
Add Subtract x

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Special Points
Cylinder
Real Numbers
Statistics
Derivative