import three;
currentprojection=perspective(-2,5,1);
size(10cm);
surface s=surface((0,0,0)--(3,0,0)--(1.5,3*sqrt(3)/2,0)--cycle,
new triple[] {(1.5,sqrt(3)/2,2)});
draw(s,red);
Generated by dwww version 1.15 on Thu Jun 20 14:10:00 CEST 2024.