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?

New Resources

Model sferyczny - dwunastościan-dwudziestościan
Slope and Road Signs
အခြေခံ data အခေါ်အဝေါ်များ
bewijs stelling van Pythagoras
Hyperbolic Paraboloid

Discover Resources

Math IA
multiplication n division
Transformation matrices
HKCEE 1999 Paper 2 Question 49

Discover Topics

Arithmetic
Expected Value
Special Points
Mode
Tangent Line or Tangent