\input zb-basic \input zb-ioport \iteman{io-port 01590460} \itemau{\v{C}erin, Zvonko; Gianella, Gian Mario} \itemti{Triangles from point-to-line distances.} \itemso{Far East J. Math. Sci. (FJMS) 3, No.1, 59-76 (2001).} \itemab The authors determine the loci $L_t$, $L_{at}$, $L_{rt}$, and $L_{ot}$ of all points for which the distances to the sides of a given triangle form a triangle, or an acute, right, or obtuse triangle, and show that of the 101 central points of a triangle listed in {\it C. Kimberling} [Math. Mag. 67, No. 3, 163-187 (1994; Zbl 0821.51014)] only 8 lie in $L_t$. \itemrv{Victor V.Pambuccian (Phoenix)} \itemcc{} \itemut{} \itemli{} \end