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Author:
rachmaninoff
GeoGebra
New Resources
拼砌四邊形
兩位數除以一位數（一）
第八周作业
四邉形 (四年級) 教師版
找出對稱軸
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減法
圖A
angle at the same segment
随机模拟实验（撒豆子估算π）的副本
判斷球體
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Logic
Angles
Difference and Slope
Random Variables
Parabola