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重心（図形の性質）
Author:
田中利則
Topic:
Centroid or Barycenter
GeoGebra
New Resources
サイクロイド
コイン投げと樹形図
正１７角形 作図 regular 17-gon
平均変化率
sine-wave
Discover Resources
w=1/zの写像
Angles on a Straight Line
問54
円周角 for mobile(Angles at Circumference)
星形多角形ver.2
Discover Topics
Logarithm
Rotation
Coordinates
Expected Value
Quadratic Functions