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選擇合適的「中間人」
Author:
phcheng
,
GeoGebra Institute of Hong Kong
GeoGebra
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兩位數除以一位數（二）
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
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From:PTT 國小題目求面積
GeoGebra
reflectional symmetry_2
銳角三角：tan
常见立体的展开图
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Continuity
Inequalities
Hypergeometric Distribution
Prism
Intersection