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18班 点名器
Author:
linhailun
GeoGebra
New Resources
柱體建築師
球體建築師
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（一）
畫出對稱圖形
Discover Resources
弦心距垂直平分弦
固定邊長之長方形的特定內接平行四邊形面積
優良作品3(昀潔)
三角形
[S2] a revised version of Jane’s GeoGebra file (modified by the author)
Discover Topics
Multiplication
Polygons
Rectangle
Isosceles Triangles
Arithmetic Operations