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内接四角形１
Author:
Bunryu Kamimura
内接四角形の４つの三角形の内心は長方形になる。
GeoGebra
New Resources
standingwave-reflection
standingwave-reflection-free
standingwave-reflection-fixed
standingwave-plus
接点の作る円は内接円
Discover Resources
対頂角・同位角・錯角
数学3 等しい弧と中心角
重外関係を見つける
三角柱の展開図
中学２年
Discover Topics
Integers
Set Theory
Surface
Difference and Slope
Interest Calculation