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正三角形內一點P, 到三頂點距3,4,5
Author:
Ho-Kai Chen
GeoGebra
New Resources
找出對稱軸
画直线等分三角形的面积
兩組對邊相等的四邊形
異分母分數減法
兩組對邊相等和有直角的四邊形
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Equal chords and their distances from the centre
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Scheimpflug image
平行线间的等积变形-第一题
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Difference and Slope
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Linear Functions
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