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

seo tool
Random Polar Curve (3)
Hyperbolic Paraboloid
¿Quién llegará más lejos en el mundial?
Model sferyczny - sześcian-ośmiościan

Discover Resources

math h.w
ConcaveWill_InnerPt
Midpoint (c)
Area of trapezium -- duplication
Salgado N.

Discover Topics

Parallelogram
Definite Integral
Indefinite Integral
Special Points
Tangent Function