内心【超わかる！高校数学Ⅰ・a】～授業～図形の性質＃９
Synopsis
内心のポイントは！ ・内心は、３つの内角の二等分線の交点で、角の二等分線は、２つの辺から距離が等しいから、内接円の中心 ...
![Summary of Geometric Properties [Easy to Understand! High School Mathematics I & A] ~ Geometric P...](https://i.ytimg.com/vi/IIYN9786MLM/hq720.jpg?sqp=-oaymwEcCNAFEJQDSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLB3Ozw5rEFHZWRqUe16vjh1_NPSWQ)
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