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Golden ratio in regular icosahedron
Author:
Mathieu Blossier
Golden ratio in regular icosahedron (see colored rectangles)
GeoGebra
New Resources
Rotating Points (Optical Illusion)
Introduction
Isosceles Triangle: Quick Construction
Simplifying Radicals: Geometric Thin Slice
Angles and Intersecting Lines: Quick Investigation
Discover Resources
RL circuit transient response
Transformations 4
p162-9-10
Geogebra lesson performance task (hopefully final draft)
Cubic with a single root between 1 and 2
Discover Topics
Congruence
Similarity Transformation or Similarity
Median Line
Cone
Geometric Mean