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The Butterfly Theorem
Author:
Lamberto Lamberti
http://www.cut-the-knot.org/pythagoras/Butterfly.shtml
GeoGebra
New Resources
Transformations: 3 Steps (V1)
Pythagoras Fractal Trees constructions
Cycloid from Formula
以百分數比較兩個數值
Conchoids of Nicomedes
Discover Resources
Angle of Rotation - Regular Hexagon
Checkbox
median
Two parts of a cube (1)
Artwork by Daniel Linus Torres
Discover Topics
Tangent Line or Tangent
Optimization Problems
Boxplot
Pyramid
Rectangle