giv me sum lengths, & me giv yu a triangel
me: put longest side horizontal with left end at (0,0)=base
Tu save werk, yuze Herons formula...
area=root[s*(s-side1)*(s-side2)*(s-side3)]
weer, s=half rim length=(1/2)*(side1+side2+side3)
Then hite=area/base side
from lengths av other 2 sides, yu kan get angels from hite & base