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七下第07章《相交线与平行线》P16平行线的性质探究(赵朝东)
Author:
赵朝东
GeoGebra
New Resources
科氏力 (Coriolis Force)
圓的切線方程
圓的基本性質
常见四边形是否是双心四边形
斜率的值
Discover Resources
尺規作圖找平方根點(以根號2為例)
some pic
DSE Circle-ACT01C Distance between Chords and Centre of a Circle
Circle
直線的斜率
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Orthocenter
Area
Means
Prism
Parabola