GRE
$$m$$
$$n$$
The number of triangles with vertices $$A$$, $$W$$, and one other vertex of the polygon
$$n-1$$
$$xy$$
$$300$$
The length of one side of pentagon $$ABCDE$$
The length of one side of triangle $$RST$$
$$xz$$
$$0$$
$$\frac{3f}{4}$$
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