klmn ; 2a+2a= 4a
abcd; 3ax4=12a
k = 3/1
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skala podobienstwa figur, a więc i obwodów =k=√3, czyli stosunek obwodu ABCD do obwodu KLMN=√3;1=√3
klmn ; 2a+2a= 4a
abcd; 3ax4=12a
k = 3/1