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Copy of Pythagoras 1
Author:
joshuachoong
,
GreenMaths
By rearranging the smaller squares you can demonstrate Pythagoras' Theorem - the Greeks probably used a proof like this.
GeoGebra
You can change the size of the triangle by dragging the corners of the triangle
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Piano. Keyboard.
van Aubel's Theorem
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Graphical method of solution of linear equations
If only graph paper were elastic
ptsLibres
Incenter Investigation
Summary of polygon areas
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Quadratic Functions
Polynomial Functions
Derivative
Secant Line or Secant