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“勾股树”最极易迭代法单晨制作实验16
Author:
单晨
GeoGebra
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四邊形的特性
直角坐標平面上的旋轉變換
兩位數除以一位數（二）
兩位數加法
三位數除以一位數（一）
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題二
测试
If x^2 + x + k > 0 for any real value of x, what is k?
P.8.20
拋物線3--平行四邊形法
Discover Topics
Arithmetic Operations
Similar Triangles
Statistics
Median Value
Cosine