Using the segment addition postulate, the true statement is BC + CD = BD.
According to the segment addition postulate, a third point B will only be located on the line segment AC if and only if the equation AB + BC = AC is true for a line segment with two endpoints, A and C.
In the question, we are asked to identify the true statement using the segment addition postulate.
Thus, using the segment addition postulate, the true statement is BC + CD = BD.
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