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椭圆画法1--参数方程法
Author:
冯伟冀
GeoGebra
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算柱 (兩位數)
【案例】2018年全国1卷理科12题
拼砌四邊形
三位數除以一位數（一）
找出對稱軸
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弧度與角度
餘弦定理
階梯立方體
蜗牛壳模型
对数函数图象的绘制
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Addition
Parallelogram
Straight Lines
Special Points
Isosceles Triangles