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三棱锥截面的最值问题
Author:
军云
GeoGebra
New Resources
撒针估算面积实验
活动三：应用性质
常见四边形是否是双心四边形
平行線的判定
第八周作业1
Discover Resources
旋轉對稱_1_李樂雯
點到直線距離
glt-c05-07 正七角錐旋轉
maths
立體圖形的特徵
Discover Topics
Tangent Line or Tangent
Multiplication
Functions
Special Points
LCM and GCD