Try the following GMAT Problem Solving question on the properties of right triangles that are commonly tested on the GMAT.
Question 47:
In the figure below, the perimeter of triangle $BDC$ exceeds the perimeter of triangle $ABD$ by how much?

$\quad 2\sqrt{3}$

$\quad 4$

$\quad 3\sqrt{3}$

$\quad 6$

$\quad 4\sqrt{3}$
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