A variable shape structure comprising: a first bend member having a first central coupling point, a first one-end coupling point, and a first other-end coupling point that are arranged so as to form a V shape with a fixed bend angle; a second bend member having a second central coupling point, a second one-end coupling point, and a second other-end coupling point that are arranged so as to form a V shape with a fixed bend angle, the second central coupling point being pivotally coupled to the first central coupling point of the first bend member; and a third bend member having a third central coupling point, a third one-end coupling point, and a third other-end coupling point that are arranged so as to form a V shape with a fixed bend angle, at least one of the third one-end coupling point and the third other-end coupling point being coupled to one of the first one-end coupling point and the first other-end coupling point of the first bend member, characterized in that the variable shape structure comprises: a fourth bend member having a fourth central coupling point, a fourth one-end coupling point, and a fourth other-end coupling point that are arranged so as to form a V shape with a fixed bend angle, the fourth one-end coupling point being pivotally coupled to the second one-end coupling point of the second bend member, the fourth central coupling point being pivotally coupled to the third central coupling point of the third bend member, wherein the V-shape formed by connecting the first central coupling point, the first one-end coupling point, and the first other-end coupling point with a virtual line does not intersect the V-shape formed by connecting the second central coupling point, the second one-end coupling point and the second other-end coupling point with a virtual line, and wherein the V-shape formed by connecting the third central coupling point, the third one-end coupling point, and the third other-end coupling point with a virtual line does not intersect the V-shape formed by connecting the fourth central coupling point, the fourth one-end coupling point and the fourth other-end coupling point with a virtual line. a first bend member having a first central coupling point, a first one-end coupling point, and a first other-end coupling point that are arranged so as to form a V shape with a fixed bend angle; a second bend member having a second central coupling point, a second one-end coupling point, and a second other-end coupling point that are arranged so as to form a V shape with a fixed bend angle, the second central coupling point being pivotally coupled to the first central coupling point of the first bend member; and a third bend member having a third central coupling point, a third one-end coupling point, and a third other-end coupling point that are arranged so as to form a V shape with a fixed bend angle, at least one of the third one-end coupling point and the third other-end coupling point being coupled to one of the first one-end coupling point and the first other-end coupling point of the first bend member, characterized in that the variable shape structure comprises: a fourth bend member having a fourth central coupling point, a fourth one-end coupling point, and a fourth other-end coupling point that are arranged so as to form a V shape with a fixed bend angle, the fourth one-end coupling point being pivotally coupled to the second one-end coupling point of the second bend member, the fourth central coupling point being pivotally coupled to the third central coupling point of the third bend member, wherein the V-shape formed by connecting the first central coupling point, the first one-end coupling point, and the first other-end coupling point with a virtual line does not intersect the V-shape formed by connecting the second central coupling point, the second one-end coupling point and the second other-end coupling point with a virtual line, and wherein the V-shape formed by connecting the third central coupling point, the third one-end coupling point, and the third other-end coupling point with a virtual line does not intersect the V-shape formed by connecting the fourth central coupling point, the fourth one-end coupling point and the fourth other-end coupling point with a virtual line. a fourth bend member having a fourth central coupling point, a fourth one-end coupling point, and a fourth other-end coupling point that are arranged so as to form a V shape with a fixed bend angle, the fourth one-end coupling point being pivotally coupled to the second one-end coupling point of the second bend member, the fourth central coupling point being pivotally coupled to the third central coupling point of the third bend member, wherein the V-shape formed by connecting the first central coupling point, the first one-end coupling point, and the first other-end coupling point with a virtual line does not intersect the V-shape formed by connecting the second central coupling point, the second one-end coupling point and the second other-end coupling point with a virtual line, and wherein the V-shape formed by connecting the third central coupling point, the third one-end coupling point, and the third other-end coupling point with a virtual line does not intersect the V-shape formed by connecting the fourth central coupling point, the fourth one-end coupling point and the fourth other-end coupling point with a virtual line.