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Author:
dearsip
GeoGebra
New Resources
sine-wave
正17角形 作図 regular 17-gon
対数螺旋
二次曲線と離心率
円の伸開線
Discover Resources
中心角と弧・弦
beta function
コネリーの多面体
軌跡
三角形の外角角の二等分線
Discover Topics
Orthocenter
Arithmetic
LCM and GCD
Equilateral Triangles
Difference and Slope