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接弦定理
Author:
嶋津恒彦
GeoGebra
New Resources
standingwave-reflection-free
カージオイド
コイン投げと樹形図
接点の作る円は内接円
円の伸開線
Discover Resources
接線の作図（自動正解判定）
三角形の外角
楕円3
多角形の外角の和
Тэнцүү талсууд
Discover Topics
Median Line
Kite
Diagrams
Pythagoras or Pythagorean Theorem
Geometric Transformations