To rotate a square 180 degrees around the point (-1,0), each vertex of the square will move to its corresponding position after the rotation. Here's an example:
Original square vertices:
A(1, 1), B(1, -1), C(-1, -1), D(-1, 1)
After rotating 180 degrees around (-1, 0):
A'(-3, -1), B'(-3, 1), C'(-1, 1), D'(-1, -1)
Please note that the prime symbol (') indicates the new positions of the vertices after the rotation.