use <hull_polyline2d.scad>;
use <triangle/tri_ear_clipping.scad>; 
use <shape_starburst.scad>;
use <experimental/tri_bisectors.scad>;

shape = shape_starburst(30, 12, 10);
hull_polyline2d(concat(shape, [shape[0]]), width = 1);

tris = tri_ear_clipping(shape);
for(tri = tris) {
    for(line = tri_bisectors([for(idx = tri) shape[idx]])) {
        hull_polyline2d(line, width = 1);
    }
}