AB > BC > AC
прямой угол = 90°
Дано: ABC
AB = 90°
BC = 50°
AC = ?
AB + BC + AC = 180°
1) 90 + 50 = 140° - AB и BC
2) 180 - 140 = 40° - AC
AB = 90° BC = 50° AC = 40°
90° > 50° > 40°
