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Math·Geometry and Trigonometry·Lines, angles, and triangles

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In right triangle $ABC$, angle $C$ is the right angle and $BC=17$. Point $D$ on side $AB$ is connected by a line segment with point $E$ on side $AC$ such that line segment $DE$ is parallel to side $BC$ and $CE=2AE$. What is the length of line segment $DE$?

1

17/3