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Trapezoid, Similar Triangles

#3580.11

Let ABCD be a trapezoid with the measure of base AB twice that of base DC, and let E be the point of intersection of the diagonals. If the measure of diagonal AC is 11, then what is the measure of segment EC?

  1. 11/3
  2. 15/4
  3. 4
  4. 7/2
  5. 3
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