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Pythagoras Proof
Author:
Volker Schroeter
A purely geometric proof with Transformation Geometry, no Algebra required
GeoGebra
...but is makes a nice case for an Algebra exercise :-)
New Resources
Supplementary Angles
Simplifying Radicals: Geometric Thin Slice
Pelecoid
Slope of a Straight Line: Run and Rise
"Compressed" Astroid as Envelope
Discover Resources
Segment area
UNit circle draw trig graphs
Rotational Symmetry
Prisma Segi-n
FREDERICK_Labelingobjects
Discover Topics
Reflection
Dilation
Multiplication
Equilateral Triangles
Piecewise Functions