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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
円の伸開線
正１７角形 作図 regular 17-gon 2
standingwave-plus
standingwave
sine-wave
Discover Resources
四元数積
看板と影
体3_95_rd3_ex5
分散と共分散と相関係数
立方体の切り口決定法（２点と1点）
Discover Topics
Orthocenter
Vectors 3D (Three-Dimensional)
Definite Integral
Reflection
Poisson Distribution