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圆锥的侧面展开图3D动画
Author:
qianqianhouhou
拖动点C
GeoGebra
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【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
異分母分數減法
畫出對稱圖形
兩組對邊相等和有直角的四邊形
Discover Resources
內切圓半徑證明
選四塊來拼砌正方形
圓錐曲線---橢圓
標準分解式2
乘方
Copy of angle between line and plane
Discover Topics
Natural Numbers
Vectors 2D (Two-Dimensional)
Indefinite Integral
Statistics
Sphere