Answer:
7. m<K = 60
8. m<U = 110
9. m<C = 50
Step-by-step explanation:
Triangles: when all 3 angles all added it should be 180 degrees
7. 60+60+unknown value=180 --> unknown value=180-60-60=60
8. 35+35+unknown value=180 --> unknown value=180-35-35=110
9. 53+77+unknown value=180 --> unknown value=180-53-77=50
