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folding aeroplane
Author:
Li Wai Leung
GeoGebra
New Resources
球體建築師
第八周作业
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
異分母分數減法
Discover Resources
Copy of 包含除法（整數或分數 ÷ 分數）
拋物線3--平行四邊形法
ggb创作
活工(三)Q2
勒洛四面体（参数曲面法）
Discover Topics
Quadratic Equations
Angles
Scalene Triangles
Tree Diagrams
Straight Lines