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Author:
詠甯
GeoGebra
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球體建築師
拼砌四邊形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
四邊形的特性
Discover Resources
題6
Copy of 固定周界的長方形的面積變化
四下_面積（一）(學生版)
工具：PlaneString
金印的展开图
Discover Topics
Difference and Slope
Probability
Ellipse
Line Segment
Polynomial Functions