Answer:
Similar shapes and congruent shapes are different due to their size.
Explanation:
Congruent shapes are shapes of the exact same size (as in angle and length measurements) and shape. Congruent shapes can be rotated, translated, or reflected by each other on a graph and still have the same shape and angles.
Similar shapes, however, may have the same angles, but do not share the same size in terms of measuring the lengths of their sides. Often similar shapes are either scaled up or down from the original shape, and are therefore similar, but not congruent.
So if they look the same, but are bigger or smaller than one another, they are similar.
Hope this helps!