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S0G20 一點到四點的最短距離和
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学用数学
GeoGebra
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兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
兩位數加法
四邊形的特性
第八周作业
Discover Resources
折扣 例6
Centres
circle
複利計算(1)
任務4的副本
Discover Topics
Percentages
Piecewise Functions
Trigonometry
Line Segment
Standard Deviation