Geometry Search

What I brought were a T-shirt and a screw. The T-shirt has reflectional symmetry because when you draw a line in the middle of it, it reflectS and two sides are equal. The next object is a screw, it is a 6 sides polygon, which mean it is a hexagon, but it is a special screw. Inside the hexagon, there have a cross inside the circle. The circle is a shape and the cross is a 4 fold rotational symmetry.