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The Butterfly Theorem
Author:
Lamberto Lamberti
http://www.cut-the-knot.org/pythagoras/Butterfly.shtml
GeoGebra
New Resources
Dissections by Guillermo Bautista
Hexagonal curves animation
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Poorly Drawn Parallelograms 2
Quiz: Finding Average Rate of Change
Discover Resources
Introduction to Transformations of f(x) = sin(x)
Write Equations in Standard and Y-Intercept Form
Intersection of three plane when some are parallel.
Question 23
Kristofer Potman IT19
Discover Topics
Rhombus
Subtraction
Arithmetic Mean
Confidence Interval
Correlation