#include<bits/stdc++.h>
#include<iostream>
#include<vector>
#include<cmath>
#include<stdlib.h>

using namespace std;
#define EPS (1e-10)
#define equals(a,b) (fabs((a)-(b)) < EPS)
 
static const int COUNTER_CLOCKWISE = 1;
static const int CLOCKWISE = -1;
static const int ONLINE_BACK = 2;
static const int ONLINE_FRONT = -2;
static const int ON_SEGMENT = 0;
 
struct Point{
  double x,y;
  Point(){}
  Point(double x,double y):x(x),y(y){}
  
  Point operator+(Point p){return Point(x+p.x,y+p.y);}
  Point operator-(Point p){return Point(x-p.x,y-p.y);}
  Point operator*(double k){return Point(x*k,y*k);}
  Point operator/(double k){return Point(x/k,y/k);}
   
  double norm(){return x*x+y*y;}
  double abs(){return sqrt(norm());}
 
  bool operator<(const Point &p) const{
    return x!=p.x? x< p.x : y < p.y;
  }
 
  bool operator==(const Point &p) const{
    return fabs(x-p.x) < EPS && fabs(y-p.y) < EPS ;
  }
};
 
typedef Point Vector;
double norm(Vector a){return a.x*a.x+a.y*a.y;}
double abs(Vector a){return sqrt(norm(a));}
double dot(Vector a,Vector b){
  return a.x*b.x+a.y*b.y;
}
double cross(Vector a,Vector b){
  return a.x*b.y-a.y*b.x;
}
int ccw(Point p0,Point p1,Point p2){
  Vector a = p1-p0;
  Vector b = p2-p0;
  if(cross(a,b) > EPS) return COUNTER_CLOCKWISE;
  if(cross(a,b) < -EPS) return CLOCKWISE;
  if(dot(a,b) < -EPS) return ONLINE_BACK;
  if(a.norm()<b.norm()) return ONLINE_FRONT;
  return ON_SEGMENT;
}
typedef vector<Point> Polygon;
struct Segment{
  Point p1,p2;
  Segment(){}
  Segment(Point p1, Point p2):p1(p1),p2(p2){}
};
typedef Segment Line;
 
double getDistanceLP(Line l,Point p){
  return abs(cross(l.p2-l.p1,p-l.p1)/abs(l.p2-l.p1));
}
 
Vector half(Vector a,Vector b){
  return (a*b.abs()+b*a.abs())*1000;
}
 
Point getCrossPoint(Segment s1,Segment s2){
  Vector base=s2.p2-s2.p1;
  double d1=abs(cross(base,s1.p1-s2.p1));
  double d2=abs(cross(base,s1.p2-s2.p1));
  double t=d1/(d1+d2);
  return s1.p1+(s1.p2-s1.p1)*t;
}
int contains(Polygon g, Point p){
  int n=g.size();
  bool x=false;
  for(int i=0;i<n;i++){
    Point a=g[i]-p,b=g[(i+1)%n]-p;
    if(abs(cross(a,b)) < EPS && dot(a,b) < EPS) return 1;
    if(a.y>b.y) swap(a,b);
    if(a.y<EPS&&EPS<b.y&&cross(a,b)>EPS) x=!x;
  }
  return (x?2:0);
}

#define curr(P, i) P[i]
#define next(P, i) P[(i+1)%P.size()]
Polygon convex_cut(Polygon P,Line l) {
  Polygon Q;
  for (int i = 0; i < P.size(); ++i) {
    Point A = curr(P, i), B = next(P, i);
    if (ccw(l.p1, l.p2, A) != -1) Q.push_back(A);
    if (ccw(l.p1, l.p2, A)*ccw(l.p1, l.p2, B) < 0)
      Q.push_back(getCrossPoint(Line(A, B), l));
  }
  return Q;
}

Vector housen(Vector v){
  Vector r;
  r.x=-v.y;
  r.y=v.x;
  return r;
}

Line slide(Line l, Vector a){
  return Line(l.p1+a,l.p2+a);
}

int main(){
  int n;
  while(cin>>n,n){
    Polygon p;
    p.clear();
    double x,y;
    for(int i=0;i<n;i++){
      scanf("%lf %lf",&x,&y);
      p.push_back(Point(x,y));
    }
 
    double ans=0,l=0,r=10000,mid;
     
    Point g1,g2;

    
    for(int i=0;i<10000;i++){
      if(equals(l,r)) break;
      mid=(l+r)/2;
      Polygon q(p);
      for(int j=0;j<n;j++){
	Line l=Line(p[j],p[(j+1)%n]);
	Vector a = housen(p[(j+1)%n]-p[j]);
	a=(a/a.abs())*mid;
	q=convex_cut(q,slide(l,a));
      }
      if(q.empty()) r=mid;
      else l=mid;
    }
   
    printf("%.6lf\n",l);
  }
   
  return 0;
}