#include <bits/stdc++.h>
using namespace std;

using ll=long long;
#define int ll

#define rng(i,a,b) for(int i=int(a);i<int(b);i++)
#define rep(i,b) rng(i,0,b)
#define gnr(i,a,b) for(int i=int(b)-1;i>=a;i--)
#define per(i,b) gnr(i,0,b)
#define pb push_back
#define eb emplace_back
#define a first
#define b second
#define bg begin()
#define ed end()
#define all(x) x.bg,x.ed
#ifdef LOCAL
#define dmp(x) cerr<<__LINE__<<" "<<#x<<" "<<x<<endl
#else
#define dmp(x) void(0)
#endif

template<class t,class u> void chmax(t&a,u b){if(a<b)a=b;}
template<class t,class u> void chmin(t&a,u b){if(a>b)a=b;}

template<class t> using vc=vector<t>;
template<class t> using vvc=vc<vc<t>>;

using pi=pair<int,int>;
using vi=vc<int>;

template<class t,class u>
ostream& operator<<(ostream& os,const pair<t,u>& p){
	return os<<"{"<<p.a<<","<<p.b<<"}";
}

template<class t> ostream& operator<<(ostream& os,const vc<t>& v){
	os<<"{";
	for(auto e:v)os<<e<<",";
	return os<<"}";
}

using ld=long double;
using cm=complex<ld>;
#define x real()
#define y imag()
const ld eps=1e-8;
const ld PI=acos(ld(-1));
int sgn(ld a){return a<-eps?-1:(a>eps?1:0);}
ld dot(cm a,cm b){return a.x*b.x+a.y*b.y;}
ld crs(cm a,cm b){return a.x*b.y-a.y*b.x;}
ld crs(cm a,cm b,cm c){return crs(b-a,c-a);}
int ccw(cm a,cm b){return sgn(crs(a,b));}
int ccw(cm a,cm b,cm c){return ccw(b-a,c-a);}
auto cmcmp=[](cm a,cm b){
	if(sgn(a.x-b.x))return a.x<b.x;
	else return sgn(a.y-b.y)<0;
};
bool cmeq(cm a,cm b){
	return sgn(a.x-b.x)==0&&sgn(a.y-b.y)==0;
};
//(-pi,0](0,pi]
int argtype(cm a){
	if(sgn(a.y)==0)return a.x<0?1:0;
	return a.y<0?0:1;
}
int argcmp(cm a,cm b){
	int at=argtype(a),bt=argtype(b);
	if(at!=bt)return sgn(at-bt);
	return -ccw(a,b);
};
//AOJ1183
int qeq(ld a,ld b,ld c,ld&d,ld&e){
	ld f=b*b-4*a*c;
	if(sgn(f)<0)return 0;
	ld g=sqrt(max(f,ld(0)));
	d=(-b+g)/(2*a);
	e=(-b-g)/(2*a);
	return sgn(f)+1;
}
//(-2)[a,-1](0)[b,1](2)
int bet(cm a,cm b,cm c){
	cm d=b-a;
	ld e=dot(d,c-a);
	if(sgn(e)<=0)return sgn(e)-1;
	return sgn(e-norm(d))+1;
}
//AOJ0153
//0-no,1-edge,2-in
int cont(cm a,cm b,cm c,cm d){
	if(ccw(a,b,c)==-1)
		swap(b,c);
	return min({ccw(a,b,d),ccw(b,c,d),ccw(c,a,d)})+1;
}
//AOJ1183
//arg between ab
//assume given lengths are valid
ld arg(ld a,ld b,ld c){
	return acos(min(max((a*a+b*b-c*c)/(2*a*b),ld(-1)),ld(1)));
}
//AOJ2233
//a->b->c と進むときに曲がる角度
//a-b-cが一直線上にあれば0が帰る
ld turn(cm a,cm b,cm c){
	return arg((c-b)/(b-a));
}

using ln=pair<cm,cm>;
cm dir(ln a){return a.b-a.a;}
cm eval(ln a,ld b){return a.a+dir(a)*b;}
int bet(ln a,cm b){return bet(a.a,a.b,b);}
int ccw(ln a,cm b){return ccw(a.a,a.b,b);}
cm proj(ln a,cm b){
	cm c=dir(a);
	return a.a+c*dot(c,b-a.a)/norm(c);
}
cm refl(ln a,cm b){
	return ld(2)*proj(a,b)-b;
}
//AOJ0153
ld dsp(ln a,cm b){
	cm c=proj(a,b);
	if(abs(bet(a.a,a.b,c))<=1)return abs(b-c);
	return min(abs(b-a.a),abs(b-a.b));
}
//AOJ1157
//0-no,1-yes(endpoint),2-yes(innner),3-overelap
int iss(ln a,ln b){
	int c1=ccw(a.a,a.b,b.a),c2=ccw(a.a,a.b,b.b);
	int d1=ccw(b.a,b.b,a.a),d2=ccw(b.a,b.b,a.b);
	if(c1||c2||d1||d2)return 1-max(c1*c2,d1*d2);
	int f=bet(a.a,a.b,b.a),g=bet(a.a,a.b,b.b);
	if(max(f,g)==-2||min(f,g)==2)return 0;
	return 3;
}
//AOJ1033
cm cll(ln a,ln b){
	return eval(a,crs(b.a,b.b,a.a)/crs(dir(a),dir(b)));
}
//AOJ1157
ld dss(ln a,ln b){
	if(iss(a,b))return 0;
	return min({dsp(a,b.a),dsp(a,b.b),dsp(b,a.a),dsp(b,a.b)});
}
//AOJ2160
//反時計回り方向に伸びる垂直二等分線
ln vbis(cm a,cm b){
	cm c=(a+b)*ld(0.5),d=b-a;
	return ln(c,cm(c.x-d.y,c.y+d.x));
}

//convex cut
vc<cm> ccut(vc<cm> a,ln b){
	int n=a.size();
	vc<cm> c;
	rep(i,n){
		int j=(i+1)%n;
		int d=ccw(b,a[i]),e=ccw(b,a[j]);
		if(d>=0)c.pb(a[i]);
		if(d*e<0)c.pb(cll(b,ln(a[i],a[j])));
	}
	return c;
}

signed main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	cout<<fixed<<setprecision(20);
	
	while(1){
		int n;cin>>n;
		if(n==0)break;
		vc<cm> a;
		rep(i,n){
			ld s,t;
			cin>>s>>t;
			a.eb(s,t);
		}
		
		ld lw=0,up=100000;
		rep(_,80){
			ld mid=(lw+up)/2;
			vc<cm> b=a;
			rep(i,n){
				cm c=a[i],d=a[(i+1)%n];
				cm e=d-c;
				e=cm(-e.y,e.x);
				e*=mid/abs(e);
				b=ccut(b,ln(c+e,d+e));
			}
			if(b.size())
				lw=mid;
			else
				up=mid;
		}
		cout<<lw<<endl;
	}
}



Measured memory_bytes: 3312