Semiperimeter
= Semiperimeter
{title2=$s$}
The semiperimeter is half the <perimeter>. For a <triangle> with side lengths $a,b,c$, it is $s=(a+b+c)/2$.
= Semiperimeter
{title2=$s$}
The semiperimeter is half the <perimeter>. For a <triangle> with side lengths $a,b,c$, it is $s=(a+b+c)/2$.