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二つの正三角形
Author:
Naofumi Horio
GeoGebra
New Resources
standingwave
接点の作る円は内接円
アステロイド
対数螺旋
カージオイド
Discover Resources
△ＡＢＣの相似三角形の重心と外心と垂心と擬似重心の軌跡は一点で交わる
half space separated by line
parabola
Rose curve
円の面積はなぜ半径を2回かけるのか？
Discover Topics
Matrices
Circumcircle or Circumscribed Circle
Line Segment
Calculus
Rectangle