Answer:
8.=150 9.=200
Step-by-step explanation:
c=28
In a convex polygon, all the exterior angles are congruent to each other.
I'll be choosing the two angle degrees of 4c-28 and 3c and set them equal to each other.
4c-28=3c
Therefore, c=28
wkldd
400 centimeters
hope this helps. have a nice day
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