the answer is:
42.5
......
i commented the explanation in my answer
Answer:
Step-by-step explanation:
maybe 8 or 1/9
Answer:
angle 2 = 90° {corresponding angles}
angle 7 + angle 5 = 180° {linear pair}
or, angle 7 + 100° = 180° {angle 5 is corresponding to 100°}
so, angle 7 = 80°
Its A.........................................
