Орёл Никита ДЗ1(Asymptote) рисунок 4

import geometry;
import patterns;
//import graph;
//import three;
defaultpen(fontsize(11pt));
dotfactor=6;
size(10cm,0);
add ("hatchback",hatch (1mm,NW,gray));
point A,B,C,D,M,O;
A=(0,0); D=(4,0);
B=2.5*dir(60);
line AD = line(A,D);
line AB = line(A,B);
line BC = parallel(B,AD);
line CD = parallel(D,AB);
C= intersectionpoint(BC,CD);
M=(B+C)/2;
line AM = line(A,M);
line BD = line(B,D);
O = intersectionpoint(AM,BD);

draw(A--B--C--D---cycle,black+0.9bp);
draw(B--D^^A--M,black+0.3bp);
draw(B--C, white+opacity(0), StickIntervalMarker(2, 1, size=0.25cm));

filldraw(A--O--D--cycle,pattern ("hatchback"));
filldraw(B--O--M--cycle,pattern ("hatchback"));
markangle(1,10,M,O,B); markangle(1,10,A,O,D);
markangle(2,15,B,M,A); markangle(2,15,D,A,O);

dot(A); dot(D); dot(B); dot(C); dot(M); dot(O);

label("$A$",A,S);  label("$D$",D,S);
label("$B$",B,N);  label("$C$",C,N);
label("$M$",M,N);  label("$O$",O,1.5W);