如图,AB∥CD,∠BAC的平分线和∠ACD的平分线交于点E,则∠AEC的度数是____90___度. 求证明过程.还要写出证明根据,如:∵AB∥CD(已知)∴∠1=∠2(两直线平行,同位角相等).
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![如图,AB∥CD,∠BAC的平分线和∠ACD的平分线交于点E,则∠AEC的度数是____90___度. 求证明过程.还要写出证明根据,如:∵AB∥CD(已知)∴∠1=∠2(两直线平行,同位角相等).](/uploads/image/z/7801550-62-0.jpg?t=%E5%A6%82%E5%9B%BE%2CAB%E2%88%A5CD%2C%E2%88%A0BAC%E7%9A%84%E5%B9%B3%E5%88%86%E7%BA%BF%E5%92%8C%E2%88%A0ACD%E7%9A%84%E5%B9%B3%E5%88%86%E7%BA%BF%E4%BA%A4%E4%BA%8E%E7%82%B9E%2C%E5%88%99%E2%88%A0AEC%E7%9A%84%E5%BA%A6%E6%95%B0%E6%98%AF____90___%E5%BA%A6%EF%BC%8E+%E6%B1%82%E8%AF%81%E6%98%8E%E8%BF%87%E7%A8%8B.%E8%BF%98%E8%A6%81%E5%86%99%E5%87%BA%E8%AF%81%E6%98%8E%E6%A0%B9%E6%8D%AE%2C%E5%A6%82%EF%BC%9A%E2%88%B5AB%E2%88%A5CD%28%E5%B7%B2%E7%9F%A5%EF%BC%89%E2%88%B4%E2%88%A01%3D%E2%88%A02%EF%BC%88%E4%B8%A4%E7%9B%B4%E7%BA%BF%E5%B9%B3%E8%A1%8C%2C%E5%90%8C%E4%BD%8D%E8%A7%92%E7%9B%B8%E7%AD%89%EF%BC%89.)
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