Answer: SAS Similarity Theorem.
Explanation:
Due to the fact the triangles contain a singular angle per each one, whilst using the process of elimination - we are able to configure that the answer is not the AA postulate. This prevalent factor also formulates a conclusion that the answer is unable to be SSS either.
The 28 and 11.2 (Hypotenuse) sides contrive the answer SAS.
SSA is NOT adequate.