Answer:
147°
Explanation:
∠4 and 33° are unilateral angles (the sum of them is equal to 180°)
its 90 degree because
∠2 and ∠4 are vertical angles. Their measures are equal, so m∠4 = 90 .
∠3 and ∠4 form a straight angle, so∠4=120°.
angle four measures 45°
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