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劉德晧proof14
Author:
郭亮偉
GeoGebra
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【案例】2018年全国1卷理科12题
球體建築師
柱體建築師
三位數除以一位數（二）
兩組對邊相等的四邊形
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集合
test2
函數
加減併式與估算
閱讀量杯
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Mode
Addition
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Polygons
Curve Sketching