Respuesta :

Answer:

Step-by-step explanation:

RT=RU

m∠RTS=m∠RTU

5w-69=w+3

4w=72

w=18

m∠RTU=18+3=21

m∠STU=2×21=42°

Answer:

m∠STU=2×21=42°

Step-by-step explanation: