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保持比例

Author:hjyanghj

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畫出對稱圖形
小数的副本
長方體平面投影 (Codex版)
球體建築師
兩組對邊相等的四邊形

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Apollonius Problem 7 CCP Inversion simple 34
平行線的斜率_hui sir
Example Generator (height of building)
Sorting Geometric Figures
連連看！橢圓在哪裡？

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Trapezoid
Scatter Plot
Combinatorics
Division
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