Q9 Find the missing angle x

Answer:
Step-by-step explanation:
we know that the minor arc that is made my the o of the interior angle is 100° b/c of 360 - 260 so then we also know that the triangle being formed is an isosceles b/c both legs are the radius, which means x is the same angle on each side of the triangle
so
180 = 100 + 2(x)
80 = 2x
40° = x
x = 40°
so y is the other side of that 40° angle or
y = 140°