Question 681728
{{{drawing(300,400,-6,6,-2,14,
locate(-1.1,0,J), locate(1,0,K), locate(-.05,6.2,L),
triangle(-1,0,1,0,0,tan(80*pi/180))  )}}}..{{{drawing(300,400,-3,3,-1,7,
locate(-1,0,M), locate(1,0,N), locate(-.05,6,O),
triangle(-1,0,1,0,0,tan(80*pi/180))  )}}}


as you can see, if two triangles are similar, their sides are proportional; so, the measure of side {{{OM}}} is proportional to the measure of side {{{LJ}}}