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基础知识
Author:
ssyzedu
西姆松定理
过三角形外接圆上异于三角形顶点的任意一点作三边的垂线,则三垂足点共线(此线常称为西姆松线).
GeoGebra
New Resources
sanjiaohanshu
四邉形 (四年級) 教師版
國旗 (Claude 版)
美國國旗 (Claude 版)
兩組對邊相等和有直角的四邊形
Discover Resources
Conic Sections
二次函數
sin函數相加
同弓形內的圓周角
數織Nonogram
Discover Topics
Boxplot
Bar Chart or Bar Graph
Statistical Characteristics
Similarity Transformation or Similarity
Straight Lines