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GeoGebra
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【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
拼砌四邊形
判斷球體
找出對稱軸
Discover Resources
圓內接正N邊形
同心圓
Doppler Effect and Shockwave
抛物线的副本
旋轉正方形
Discover Topics
Special Points
Rational Numbers
Straight Lines
Triangles
Arithmetic