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Copia: Cryptography: Cipher Disk
Author:
Jordi Guàrdia i Rúbies
,
smiller
This applet allows for encoding and decoding messages.
GeoGebra
New Resources
van Aubel's Theorem
Stairs (Optical Illusion)
Slope of a Straight Line: Run and Rise
"Compressed" Astroid as Envelope
Cross Product in 2D and 3D
Discover Resources
Forum_37791_E_neusis
Secondary Tech Demo
Investigation : Is SAA a Congruence Shortcut?
Circle Theorems
Rectangle+
Discover Topics
Square
Ellipse
Cuboid
Upper and Lower Sum or Riemann Sum
Orthocenter