Answer:
x = 47.5°, m∠B = m∠E = 190°
Explanation:
The formula for the interior angle sum of a polygon is (n-2) * 180, with n being the number of sides.
1. 8x + 160 = (5-2) * 180°
2. 8x + 160 = 540°
3. 8x = 380°
4. x = 47.5°
5. 4x = 190°
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