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congruent (AAA) 2
Author:
Ricky Chan
GeoGebra
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兩位數除以一位數（一）
sanjiaohanshu
找出對稱軸
兩組對邊相等的四邊形
兩位數加法
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表示數線上的位置
拼砌多邊形
尺規作圖平分一個角
“勾股树”最极易迭代法单晨制作实验16
了解圓方程(2)的副本
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Root
Vectors 2D (Two-Dimensional)
Trapezoid
Constructions
Isosceles Triangles