from math import sqrt
print ('Vvedite koordinaty pervoy versyny')
x1,y1=map(float,input().split())
print ('Vvedite koordinaty vtoroy versyny')
x2,y2=map(float,input().split())
print ('Vvedite koordinaty tretej versyny')
x3,y3=map(float,input().split())
a=sqrt((x2-x1)**2+(y2-y1)**2)
b=sqrt((x3-x2)**2+(y3-y2)**2)
c=sqrt((x1-x3)**2+(y1-y3)**2)
p=(a+b+c)/2.0
s=sqrt(p*(p-a)*(p-b)*(p-c))
print ('Ploshchad',"%.04f"%s,'Perimetr',"%.04f"%(a+b+c))
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