oblicz obwód trójkąta o podanych współrzędnych A=(3,1)B(4,3)C(-2,6)
|AB|=√(4-3)²+(3-1)²=√1+4=√5
|BC|=√(-2-4)²+(6-3)²=√36+9=√45=3√5
|AC|=√(-2-3)²+(6-1)²=√25+25=√50=5√2
OB=√5+3√5+5√2=4√5+5√2
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|AB|=√(4-3)²+(3-1)²=√1+4=√5
|BC|=√(-2-4)²+(6-3)²=√36+9=√45=3√5
|AC|=√(-2-3)²+(6-1)²=√25+25=√50=5√2
OB=√5+3√5+5√2=4√5+5√2