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摩天輪
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+x sir
GeoGebra
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算柱 (兩位數)
找出對稱軸
錐體建築師
柱體建築師
三位數除以一位數（一）
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題三
中線平方定理在圓上應用
正七角錐(旋轉，實體、透視)
(008)80102
S3 Ex4.3 Q03(3D圖)
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Orthocenter
LCM and GCD
Incircle or Inscribed Circle
Diagrams
Tangent Line or Tangent