Self-standing flat plate-like article and methods of exhibiting and manufacturing the same

A method for exhibiting a flat plate-like article, comprising:

• bringing the flat plate-like article comprising two or more flat plate-like members and one or more connection parts, said flat plate-like article being characterized in that a first flat plate-like member and a second flat plate-like member are connected to each other through a connection part which is positioned on the border line of the first and second flat plate-like members and projected backward from the border line so that the first and second flat plate-like members can be double-spread, into a self-standing double-spread state, in which at least a part of the bottom-side of the connection part, at least a part of the bottom-side of the first flat plate-like member, and at least a part of the bottom-side of the second flat plate-like member function as contact parts to define a contact plane, wherein a front edge of the connection part located at the border line does not parallel a back edge of the connection part located opposite the front edge, and the front edge is longer than the back edge;
• and
• exhibiting the flat plate-like article in the double-spread state with the contact plane resting on a support surface such that the inside surfaces of the first and second flat plate-like members each face upward to form an angle greater than 90 degrees with the contact plane, while the outside surfaces of the first and second flat plate-like members each face downward to form an angle smaller than 90 degrees with the contact plane.