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正多面体
Author:
tomjhs
GeoGebra
New Resources
対数螺旋
正17角形 作図 regular 17-gon
サイクロイド
等積変形2
接点の作る円は内接円
Discover Resources
等積変形と四角形
傍接楕円
p.100
数学パズル【点と直線】
STEP B 62
Discover Topics
Algebra
Special Points
Complex Numbers
Intersection
Percentages