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ie 5
Author:
LAM YU SANG
GeoGebra
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【案例】2013年安徽高考15题
兩位數除以一位數（一）
三位數除以一位數（一）
兩組對邊相等的四邊形
找出對稱軸
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旋轉動畫
摩天輪
扇形旋轉
拋物線2--焦點法
三角函數圖解的副本
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Combinatorics
Quadrilaterals
Mathematics
Conic Sections
Conditional Probability