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固定周界的長方形面積變化
Author:
phcheng
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
異分母分數減法
柱體建築師
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
兩位數除以一位數（一）
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Area of polygon
應用導數繪製函數圖形
Pyramid and Cone 2
Apollonius Problem 6 CLP Inversion 12
三角函数线
Discover Topics
Percentages
Orthocenter
Conic Sections
Bar Chart or Bar Graph
Similar Triangles