(本小题满分10分)
如图,AB = 3AC,BD = 3AE,又BD∥AC,点B,A,E在同一条直线上.
(1) 求证:△ABD∽△CAE;
(2) 如果AC =BD,AD =BD,设BD = a,求BC的长.
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(本小题满分10分)
如图,AB = 3AC,BD = 3AE,又BD∥AC,点B,A,E在同一条直线上.
(1) 求证:△ABD∽△CAE;
(2) 如果AC =BD,AD =BD,设BD = a,求BC的长.
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