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三角形の傍心（excenters）
Author:
Takayuki Kamei
GeoGebra
New Resources
sine-wave
６章⑥三角柱の展開図
サイクロイド
standingwave-reflection
アステロイド
Discover Resources
等円術
アルキメデスらせん
正多面体
safig2
Anežka
Discover Topics
Geometric Mean
Pythagoras or Pythagorean Theorem
Planes
Random Experiments
Special Points