Question 422494
a+b+y=180
b/6+b+b/2=180
(b+6b+3b)/6=180
10b/6=180
10b=6*180
10b=1,080
b=1,080/10
b=108 degrees.
a=108/6=18 degrees.
y=108/2=54 degrees.
Proof:
18+108+54=180
180=180