public TamGiac(Diem A, Diem B)
{
Dau = A;
Cuoi = B;
}
public Line(Diem A, Diem B)
{
Dau = A;
Cuoi = B;
}
public TamGiac()
{
Dau = new Diem(0, 0);
Cuoi = new Diem(0, 0);
}
public Line()
{
Dau = new Diem(0, 0);
Cuoi = new Diem(0, 0);
}
