Answer:
m∠12 = 47°
Explanation:
Angle 7 and angle 12 are alternate interior angles. They are formed by two parallel lines a and b and a transversal. These angles are located inside the parallel lines on opposite sides of the transversal.
These angles have the same measure, therefore the measure of angle 12 is equal to:
m∠12 = m∠7
m∠12 = 47°
So, the answer is m∠12 = 47°
