Final answer:
Without specific details about triangles SAM and DEL, it is not possible to determine if they are similar or to identify a similarity postulate or theorem that applies.
Step-by-step explanation:
The question "Is SAM~DEL?" suggests that we are dealing with a problem of geometric similarity. However, without specific information on triangle SAM and triangle DEL, such as side lengths or angle measures, we cannot determine whether the two triangles are similar. In the context of geometry, the symbols SAM and DEL often refer to the vertices of triangles, indicating a query about the similarity of these triangles.
To prove that SAM is similar to DEL, we need information that would trigger application of similarity postulates or theorems such as Side-Side-Side (SSS), Side-Angle-Side (SAS), or Angle-Angle (AA) similarity criteria.
Without further details on the triangles' properties, I'm unable to definitively answer whether SAM is similar to DEL and cannot specify which similarity postulate or theorem applies. Additional information about the triangles would be required to move forward with a solution.