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二维仿射变换的矩阵表示
Author:
代国兴
GeoGebra
GeoGebra
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圓周公式的應用
球体的体积推导
三位數除以一位數（一）
多邊形的面積
垂直線的斜率
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ghrtghrtghrtgbr
test
parmater
n星角 のコピー
三角形的构成的副本
Discover Topics
Sine
Histogram
Means
Definite Integral
Perimeter