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GeoGebra
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小数 的副本
錐體建築師
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
算柱 (兩位數)
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幾何原理
quadrilaterals 3
ptccs2new3
几何体的副本
剪切成正三棱柱(制作:李三军,修订:孟宝兴)
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Cone
Geometric Transformations
Vectors 2D (Two-Dimensional)
Piecewise Functions
Perimeter