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橢圓之極偶 / polarity for ellipse
Author:
XIE Yuheng
GeoGebra
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【案例】2018年全国1卷理科12题
第八周作业
兩位數加法
柱體建築師
兩組對邊相等的四邊形
Discover Resources
y=x²+a的圖形
test test test
proof 64 潘研
等腰三角形
圖一 的複本
Discover Topics
Triangles
Diagrams
Dilation
Indefinite Integral
Piecewise Functions