mohon ka no 1 aku mentok

/_ GIH = x + 35 = 2 x
= x = 35
/_ GOH= (35) + 35
= 70

sudut pusat = 2 x sudut keliling
sudut GOH = 2 x sudut GIH
x+35 = 2x
2x-x = 35
x = 35

besar sudut GIH = 35 derajat
besar sudut GOH = x+35 = 35+35 = 70 derajat, atau
besar sudut GOH = 2xsudut GIH = 2x35 = 70 derajat