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2020年西城二模28题第1问
Author:
Jiezhe Wang
GeoGebra
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兩組對邊相等的四邊形
Nested spiral octagon
兩組對邊相等和有直角的四邊形
畫出對稱圖形
長方體平面投影 (Codex版)
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相對與絕對角速度
Bearings
夾擠單位圓的面積
中心对称
旋转的花瓣
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Constructions
Division
Real Numbers
Cylinder
Orthocenter