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Angle at centre twice angle at circumference
Author:
Big Lee
GeoGebra
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兩組對邊相等的四邊形
球體建築師
四邊形的特性
【案例】2018年全国1卷理科12题
画直线等分三角形的面积
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三角形的外角等于与其不相邻的两个内角之和
四角錐的坡度
gpxxz 線性組合：六角星、mj100-3
Completing the square(配方法)
根據百分率找數量（一）: 例4的副本
Discover Topics
Quadratic Functions
Parallelogram
Vectors 2D (Two-Dimensional)
Square
Symmetry