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P21 图1-11(1)
Author:
常振虎
GeoGebra
New Resources
判斷球體
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
GeoGebra笔记功能体验课件
異分母分數減法
Discover Resources
Conic section-ellipse&hyperbola
“勾股树”最极易迭代法单晨制作实验16
堆疊正立方體的副本
a sin(bx+c) + d 的圖形的副本
小数除法
Discover Topics
Area
Fractal Geometry
Solids or 3D Shapes
Multiplication
Rotation