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Tangent line illustration
Author:
Ying-Ju Chen
GeoGebra
New Resources
z`]]
A note on Erdős’s mysterious remark
Golden Rectangles and Golden Spirals
Flip 9 Coins
Experiments with Transformations in the Plane
Discover Resources
rectangle Joe
unit circle -1
Gissell
Spirograph 2
Link with Carolus Borromeus?
Discover Topics
Pyramid
Geometry
Similar Triangles
Rectangle
Angles