116 with newlines (by wc) 
@ARGV="ctriangle.txt";
sub n{print$"x(40-$r/2)."$x\n"}
for(map{split}<>){$c=$r,n,$x=''if($r=length($x.=" $_"))>$c}n

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In reply to Re: Triangle Golf by xtrem
in thread Triangle Golf by nashdj

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