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Author:
lee chao ming
GeoGebra
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兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
判斷球體
三位數除以一位數（二）
柱體建築師
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waaachen
高美溼地
畢氏定理
平面幾何的思考
抛物线顶点形成椭圆动画
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Terms
Random Variables
Definite Integral
Variance
Isosceles Triangles