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a triangle ABC cut into 2
Author:
Arthur Lee
Something special about this triangle
GeoGebra
Drag the vertices and find out what property of this triangle is unchanged. Try another one here:
http://www.geogebratube.org/material/show/id/58145
New Resources
Building Parallelograms with Set Areas
Rolling an Equilateral Triangle
Focus and Directrix
apec
Superellipse
Discover Resources
Inversion of a circle not including the centre of inversion.
Menelaus.
Paksi simetry poligon sekata
wonderful caleidoscope by Ludger (DE)
Interference Patterns
Discover Topics
Subtraction
Cone
Vectors
Variance
Linear Programming or Linear Optimization