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拋物線之極偶 / polarity for parabola
Author:
XIE Yuheng
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
第八周作业
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
Discover Resources
Quiz on Simplifying Ratios 比的化簡：測驗
坐標網格的複數映射（次方）
圓系
Copy of 畢式定理 (06)
太陽系
Discover Topics
Arithmetic Mean
Standard Deviation
Root
Frequency Distribution
Random Experiments