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Properties of a Parallelogram
Author:
Lttcmooc
GeoGebra
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四邊形的特性
異分母分數減法
【案例】2018年全国1卷理科12题
拼砌四邊形
画直线等分三角形的面积
Discover Resources
模擬3D空間物件：空間坐標軸的建立
尺規作圖2
时钟
operation of matrix
有理数与无理数
Discover Topics
Logarithmic Functions
Quadratic Equations
Tree Diagrams
Median Line
Real Numbers