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tresset_1 [31]
3 years ago
7

A bit confused to be honest :(

Mathematics
2 answers:
Luden [163]3 years ago
3 0
X = 110 degrees

Explanation: we know that the sum of all angle measures will have to equal 360 degrees . By using simple algebra (128+40+82+x = 360) we can determine 360-250=110 degrees

gogolik [260]3 years ago
3 0

Answer:

x = 110

Step-by-step explanation:

360 = 128 + 40 + 82 + x

360 = 250 + x

360-250 = x

110 = x

to know the total value of all sides

(n-2)×180 ÷ n

n= total of sides

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