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正二十面体
Author:
Norio Yamakoshi
1辺の長さが2の正二十面体です。
GeoGebra
New Resources
接点の作る円は内接円
円の伸開線
sine-wave
等積変形2
standingwave-reflection-fixed
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分数のわり算
四面体2015.11.1
パンタグラフ(Pantograph)
三角比0-90
二次関数を描く
Discover Topics
Square
Conic Sections
Terms
Sphere
Calculus