Here is your answer
![<b>SSS </b>](https://img.qammunity.org/2020/formulas/mathematics/middle-school/psu1qmlp6xjao5xuh3mx1lteevx9q47n8q.png)
REASON:
SSS congruency states that, if all the three sides of a triangle are respectively equal to the corresponding sides of another triangle then both triangles are said to be
.
Here, in both triangles
7units=7 units
8units=8units
Middle side is common to both triangles so it is equal.
Hence, both triangles are congruent by SSS
HOPE IT IS USEFUL