Na skolko gradusov 1/3cast preymugolnogo ugla menwe 1/4casti razvernutogo.ugla?

Question

Na skolko gradusov 1/3cast preymugolnogo ugla menwe 1/4casti razvernutogo.ugla?

Answer 1

1) 90° * 1/3 = 30° 
Развернутый угол = 180°
2) 180° * 1/4 = 45°
3) 45 - 30 = на 15° меньше - ОТВЕТ