Final answer:
The provided information does not contain enough details or a clear diagram to solve for x in the similarity of triangles △EDC and △ABC using the properties of similar triangles.
Step-by-step explanation:
The information provided is fragmented and lacks a clear figure or additional context needed to solve for x in the similarity of triangles △EDC and △ABC. To determine the value of x in similar triangles, one would typically use the properties that corresponding sides are proportional, and the corresponding angles are equal. For instance, if we know that triangle EDC and triangle ABC are similar, and we have the lengths of corresponding sides of one triangle and at least one length of the other triangle, we can set up a ratio to find x. Without the specific measurements or a clear diagram, solving for x is not possible with the given information.