Answer:
12. 50 ; 13. 103
Step-by-step explanation:
In Question 12, same side angles that are formed by a line intersecting parallel lines are congruent, meaning they have the same angle measure, which gives us angle 3 = 50 degrees
In Question 13, by the same side interior angles are supplementary (add up to 180 degrees) theorem, we get that:
77 + (angle 2) = 180 (subtract 77 from both sides)
(angle 2) = 103
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