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ludmilkaskok [199]
2 years ago
10

Need help please would really be greatful

Mathematics
1 answer:
Rainbow [258]2 years ago
7 0

Answer:

122°  

Step-by-step explanation:

The formula for finding the sum of all angles in a polygon is:

(n-2) * 180°

n is the number of angles

Here n = 7, so the sum of all angles is

(7-2) * 180°  = 900°

x = 900 - 128 - 130 - 120 - 115 - 145 - 140 = 122°

Make me the brainliest ;)

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