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剪切成正三棱柱(制作:李三军,修订:孟宝兴)
Author:
孟宝兴
GeoGebra
New Resources
畫出對稱圖形
球體建築師
判斷球體
拼砌四邊形
第八周作业
Discover Resources
百分數(小學):折扣 / 賺賠(HTML5 版)
給三角形, 求以三頂點為圓心, 作三個外切圓
二階行列式-平行四邊形的面積
橢圓1--同心圓法
等差数列计算练习
Discover Topics
General Quadrilateral
Limits
Definite Integral
Hypergeometric Distribution
Conic Sections