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折纸—直三棱锥
Author:
GeoGebra Institute of WuXi
GeoGebra
New Resources
第八周作业
画直线等分三角形的面积
兩組對邊相等的四邊形
四邊形的特性
異分母分數減法
Discover Resources
Pythagorean Theorem Proof with Shearing
測試教案 80335 盧沛宏
homework
工具：PlaneArrows, PlaneText... (v.2)
相反数 思考（教材第10页）
Discover Topics
Unit Circle
Confidence Interval
Ellipse
Square
Tree Diagrams