Identify all corresponding sides. Express the number of corresponding sides.
The squares have four sets of corresponding sides.

A square has 4 sides formed by line segments.

Identify the corresponding sides.
AB ¯ and EF ¯
AC ¯ and EG ¯
BD ¯ and FH ¯
CD ¯ and GH ¯

Corresponding sides in the square depend on the position of the sides in the square. Sides that are in the same relative position, such as the right or left sides, are corresponding.