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垂足三角形
Author:
孟宝兴
垂足三角形
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
找出對稱軸
画直线等分三角形的面积
畫出對稱圖形
柱體建築師
Discover Resources
Opening Box
Copy of 茵01
一线三等角模型
賺賠：例1的副本
五年級 排水法
Discover Topics
Circle
Confidence Interval
Terms
Addition
Volume