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Polygon Activity
Author:
Charlie Yip
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GeoGebra
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【案例】2018年全国1卷理科12题
畫出對稱圖形
拼砌四邊形
第八周作业
三位數除以一位數（二）
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七巧板揖人2
堆垛六顆鬼東西
拋物線
p.8.18
轨迹最值问题
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Dilation
Linear Functions
Congruence
Fractal Geometry
Inequalities