public static DIEM Trong_tam(TAM_GIAC tg)
{
DIEM kq;
kq.x = (tg.A.x + tg.B.x + tg.C.x) / 3;
kq.y = (tg.A.y + tg.B.y + tg.C.y) / 3;
return(kq);
}
public static String Chuoi(TAM_GIAC tg)
{
String kq;
kq = "A" + XL_DIEM.Chuoi(tg.A);
kq = kq + "B" + XL_DIEM.Chuoi(tg.B);
kq = kq + "C" + XL_DIEM.Chuoi(tg.C);
return(kq);
}
public static String Chuoi_tam_giac(TAM_GIAC tg)
{
String kq;
kq = "A" + Chuoi_diem(tg.A);
kq = kq + " B" + Chuoi_diem(tg.B);
kq = kq + " C" + Chuoi_diem(tg.C);
return(kq);
}
public static Double Chu_vi(TAM_GIAC tg)
{
Double kq;
kq = XL_DIEM.Khoang_cach(tg.A, tg.B);
kq = kq + XL_DIEM.Khoang_cach(tg.B, tg.C);
kq = kq + XL_DIEM.Khoang_cach(tg.C, tg.A);
return(kq);
}