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橢圓軌跡_過圓內一點與圓內切
Author:
Wu Xiao-Ren
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
第八周作业
兩位數除以一位數（一）
錐體建築師
球體建築師
Discover Resources
Volume of the Cuboid
Triangles with the same height
方形地毯
三角形的垂心（一）
多邊形的面積
Discover Topics
Bar Chart or Bar Graph
Perimeter
Reflection
Symmetry
Orthocenter