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平行四邊形和長方形的大小
Author:
杜寶茵
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
兩組對邊相等的四邊形
算柱 (兩位數)
四邉形 (四年級) 教師版
画直线等分三角形的面积
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正多边形内接迭代
How to draw a triangle with ruler and compasses?
拋物線軌跡（內切型）
蚂蚁在长方体表面爬行的最短路径问题
橢圓代數性質,光學性質,生活應用
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Hypothesis Testing
Logic
Cone
Linear Regression
Numbers