Similar Figures --> Figures that have the same shape but are not necessarily the same size
Congruent Figures --> Figures that have the same size and shape
Corresponding Sides --> The sides of congruent or similar figures that are in the same position
You could also make them into fractions like 6/10, 8/12, 3/5, and 4/6. We can then simplify each of them to see which of them match up. Once, you've found the match, then you've found the similar figures.