The angle that is an alternate interior angle to ∠3 will be 60°.
From the complete information, it should be noted that the value of angle 3 is 120°.
It should be noted that the angle on straight line is 180°.
Therefore, the angle that is an alternate interior angle to ∠3 will be:
= 180° - 120°
= 60°
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Which angle is an alternate interior angle to ∠3?
60
120
10
30
