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[中考] 2017 北京-26-半圆内的直角三角形
Author:
洋葱教研
GeoGebra
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四邊形的特性
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
找出對稱軸
Nested spiral octagon
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refraction law
Linear Programming 線性規劃
hint
重难题组周练(1)——二次函数
长方形边线展开
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Translation
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