Ответ:
1). RS = PQ = 15;
2). QT = ST = 18;
3). уг PQR = 180° - 120° = 60°
4). уг SPQ = уг QRS = 120°
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Ответ:
1). RS = PQ = 15;
2). QT = ST = 18;
3). уг PQR = 180° - 120° = 60°
4). уг SPQ = уг QRS = 120°