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全等中一线三等角
Author:
数豆豆
GeoGebra
New Resources
折扣
科赫雪花
平行線的判定
正方形雪花图案
活动三：应用性质
Discover Resources
正四面體的反射對稱
Quiz on Solving Right Triangles (Finding Side Lengths) 解直角三角形：測驗1（求邊長）
test
組織圖、頻數多邊形
模板
Discover Topics
Isosceles Triangles
Arithmetic
Functions
Reflection
Constructions