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Different views of an equilateral triangle
Author:
Steve Phelps
GeoGebra
Inspired by this tweet.
New Resources
Open Middle Logarithm Exercises (1)
bearing HK
Droste effect draft
探究由平行線和截線所成的角
Shade a spheric triangle with "surface".
Discover Resources
Deriving the equation for the Cartesian Parabola
Archive Mapping
Orthic Triangle
Shows why d/dx (sin (x degrees)) = pi/180 cos (x degrees)
day 86
Discover Topics
Vectors 2D (Two-Dimensional)
Dilation
Geometric Transformations
Rectangle
Step Functions