Answer:
the answer is 3
Step-by-step explanation:
it just is
Answer:Add them up
2.5
type A/B
10/2.5=4
15/6=2.5
18/7.2=2.5
using angle sum property
we get
110+35+(x+12)=180
(x+12)=180-145
(x+12)= 35
x= 35-12
x= 23
