Final answer:
Insufficient information is provided to accurately answer the question regarding congruent triangles and midpoint theorems in geometry. A diagram or additional context is necessary to proceed.
Step-by-step explanation:
The question pertains to the subject of Geometry, specifically involving congruent triangles and midpoint theorems. Unfortunately, without the accompanying diagrams or more context, it's impossible to accurately match the given reasons with the statements to prove the triangular congruency. To resolve the student's question, a clear understanding of the properties of congruent triangles, midpoints, and the relationships between angles and sides in triangles is necessary. Due to the insufficient information provided here, we cannot proceed with a precise solution. More details or an illustration would be required to complete the matching of reasons with the statements.