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Apollonius Problem 7 CCP Inversion simple 34
Author:
tkyggb
GeoGebra
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【案例】2018年全国1卷理科12题
兩位數除以一位數（二）
算柱 (兩位數)
判斷球體
兩組對邊相等和有直角的四邊形
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美麗的萬花筒
大小不同串珠
梯形面積(求上底)
ptcc trigo level 2
我的第一个GGB绘本
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Scalene Triangles
Symmetry
Ellipse
Tangent Line or Tangent
Coordinates