A convex region covers a family of arcs if it contains a congruent copy of every arc in the family. A cover for a family of arcs is a convex region containing a congruent copy of every arc in the family. The smallest cover for a family of
arcs on the plane was asked. A popular shape of arcs is a triangle. In 1997, Wetzel [6] presented the smallest equilateral triangular cover for the family of all triangles of perimeter two. In 2000, Furedi and Wetzel [1] presented the smallest
convex cover for the family of all triangles of perimeter two. In the same year, Wetzel [5] presented the smallest rectangular cover for the family of all triangles of perimeter two. In 2009, Zhang and Yuan [7] presented the smallest regularized parallelogram (whose length of the smaller diagonal is not less than one) cover for the family of all triangles of perimeter two. In 2011, Sroysang [3,4] presented the smallest regularized trapezoid (whose length of the smaller diagonal is not less than one, and two smaller angles are opposite) cover for the family of all triangles of perimeter two. In this paper, we seek the smallest regular pentagon cover for the family of all triangles of perimeter two.
A convex region covers a family of arcs if it contains a congruent copy of every arc in the family. A cover for a family of arcs is a convex region containing a congruent copy of every arc in the family. The smallest cover for a family of arcs on the plane was asked. A popular shape of arcs is a triangle. In 1997, Wetzel [6] presented the smallest equilateral triangular cover for the family of all triangles of perimeter two. In 2000, Furedi and Wetzel [1] presented the smallest convex cover for the family of all triangles of perimeter two. In the same year, Wetzel [5] presented the smallest rectangular cover for the family of all triangles of perimeter two. In 2009, Zhang and Yuan [7] presented the smallest regularized parallelogram (whose length of the smaller diagonal is not less than one) cover for the family of all triangles of perimeter two. In 2011, Sroysang [3,4] presented the smallest regularized trapezoid (whose length of the smaller diagonal is not less than one, and two smaller angles are opposite) cover for the family of all triangles of perimeter two. In this paper, we seek the smallest regular pentagon cover for the family of all triangles of perimeter two.
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