M∥n, m∠1 = 50°, m∠2 = 48°, and line s bisects ∠ABC. What is m∠3?
1 answer:
<h3>
Answer:</h3>
49°
<h3>
Step-by-step explanation:</h3>
∠DEF = ∠1 +∠2 = 50° +48° = 98°
∠ABC = ∠DEF because they are alternate exterior angles, hence congruent.
∠3 = ∠4 because they are vertical angles.
∠3 = (1/2)∠ABC = (1/2)·98° . . . . . ∠4 is half of ∠ABC
∠3 = 49°
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