Question

matching sides are called
corresponding angles
the same
corresponding sides
congruent sides

Explanation:

In the context of congruent or similar figures, matching (or corresponding) sides are specifically referred to as "Corresponding Sides". The other options: "Corresponding Angles" refers to angles, "The Same" is too vague, and "Congruent Sides" emphasizes the sides being congruent in length but the term for matching sides by position is "Corresponding Sides".

Answer:

Corresponding Sides