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一个圆的若干竞赛异型题
Author:
王俊辉
拖动点C，探究
GeoGebra
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第八周作业
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
拼砌四邊形
兩位數加法
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Proofs Without Words
proof 49 黃彥淇
三角恒等式證明
三圓外切
Distance(距離公式)
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Equilateral Triangles
Pie Chart or Circle Chart
Complex Numbers
Derivative
Similar Triangles