## The isoperimetric inequality for a pentagon in $$E_ 3$$and its generalization in $$E_ n$$space.(English)Zbl 0496.52009

### MSC:

 52A40 Inequalities and extremum problems involving convexity in convex geometry 52A20 Convex sets in $$n$$ dimensions (including convex hypersurfaces)

### Keywords:

convex hull; isoperimetric inequalities
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