The variable m should equal -5
Similar triangles are triangles that have the same interior angles and the corresponding sides are proportional, that is, for triangles STU and XYZ we have the proportion:

The corresponding sides are congruent only if the proportion rate is 1, but that is not always true and it's not necessary.
Therefore the correct option is B: False
If the corresponding sides are congruent, the triangles are congruent.
Answer:
She sprinkles 3/10 of a cup of powdered sugar on the brownies.
Step-by-step explanation:
The guy on top is correct