The given angles are .
Since . So,
are congruent angle.
(
are congruent angle)
(Definition of congruent angles)
(Substitute
)
(Subtract 5x from each side)
(Apply commutative property of addition:
) \ \
(Apply additive inverse property:
)
(Apply additive identity property:
)
(Subtract:
)
(Add 23 to each side)
(Apply additive inverse property:
)
(Apply additive identity property:
)
(Add:
)
(Divide each side by 3)
(Cancel common terms)
(Divide:
)
Substitute value of x in to measure the angle.
(Given)
(Substitute x = 11)
(Multiply:
)
(Simplify)
The measure of is 65.