已知线段AB,在AB的延长线上取一点C,使BC=AB,在BA的延长线上取一点D,使DA=2AB,求DB的长
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已知线段AB,在AB的延长线上取一点C,使BC=AB,在BA的延长线上取一点D,使DA=2AB,求DB的长
3分钟可以吗?有奖赏哦
3分钟可以吗?有奖赏哦
![已知线段AB,在AB的延长线上取一点C,使BC=AB,在BA的延长线上取一点D,使DA=2AB,求DB的长](/uploads/image/z/7398296-8-6.jpg?t=%E5%B7%B2%E7%9F%A5%E7%BA%BF%E6%AE%B5AB%2C%E5%9C%A8AB%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A%E5%8F%96%E4%B8%80%E7%82%B9C%2C%E4%BD%BFBC%3DAB%2C%E5%9C%A8BA%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A%E5%8F%96%E4%B8%80%E7%82%B9D%2C%E4%BD%BFDA%3D2AB%2C%E6%B1%82DB%E7%9A%84%E9%95%BF)
画个图就知道了,长度没给
已知线段AB,在AB的延长线上取一点C,使BC=AB,在BA的延长线上取一点D,使DA=2AB,求DB的长
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