三角形ABC内接于圆O,AD垂直BC,OE垂直BC,OE=1|2BC❶求角BAC的度数❷将三角形ABD沿AC折叠为三角形ACF,将三角形ADB折叠为三角形ABG,延长FC和GB相交 于点H.求证:四边形AFHG是正方形.❸若BD=6,CD
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![三角形ABC内接于圆O,AD垂直BC,OE垂直BC,OE=1|2BC❶求角BAC的度数❷将三角形ABD沿AC折叠为三角形ACF,将三角形ADB折叠为三角形ABG,延长FC和GB相交 于点H.求证:四边形AFHG是正方形.❸若BD=6,CD](/uploads/image/z/8584530-42-0.jpg?t=%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E5%86%85%E6%8E%A5%E4%BA%8E%E5%9C%86O%2CAD%E5%9E%82%E7%9B%B4BC%2COE%E5%9E%82%E7%9B%B4BC%2COE%3D1%7C2BC%26%2310102%3B%E6%B1%82%E8%A7%92BAC%E7%9A%84%E5%BA%A6%E6%95%B0%26%2310103%3B%E5%B0%86%E4%B8%89%E8%A7%92%E5%BD%A2ABD%E6%B2%BFAC%E6%8A%98%E5%8F%A0%E4%B8%BA%E4%B8%89%E8%A7%92%E5%BD%A2ACF%2C%E5%B0%86%E4%B8%89%E8%A7%92%E5%BD%A2ADB%E6%8A%98%E5%8F%A0%E4%B8%BA%E4%B8%89%E8%A7%92%E5%BD%A2ABG%2C%E5%BB%B6%E9%95%BFFC%E5%92%8CGB%E7%9B%B8%E4%BA%A4+%E4%BA%8E%E7%82%B9H.%E6%B1%82%E8%AF%81%EF%BC%9A%E5%9B%9B%E8%BE%B9%E5%BD%A2AFHG%E6%98%AF%E6%AD%A3%E6%96%B9%E5%BD%A2.%26%2310104%3B%E8%8B%A5BD%3D6%2CCD)
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