Answer:
1. U= 70 degrees V=60 degrees
2. U=65 degrees
3. U=60 degrees(inside) 120 degrees(outside)
4. R= 125 degrees(inside) 55 degrees(outside)
Step-by-step explanation:
1. 180-120=60, 60+50= 110, 180-110=70
2. 180-115= 65, 65+50= 115, 180-115=65
3. 70+50= 120, 180-120= 60
4. 30+25=55, 180-55=125, 180-125=55
