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二つの正三角形
Author:
Naofumi Horio
GeoGebra
New Resources
standingwave-reflection-fixed
二次曲線と離心率
斜めドップラー
sine-wave
等積変形2
Discover Resources
垂心の軌跡
渡辺の定理から その２
線対称（万華鏡）
授業用天秤
２つの円と直線に接する円
Discover Topics
Plane Figures or Shapes
Conditional Probability
Rhombus
Dilation
General Quadrilateral