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Yuliya22 [10]
3 years ago
11

50 points need help

Mathematics
2 answers:
jolli1 [7]3 years ago
7 0

Answer:

x = 111

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

here n = 7

sum = 180° × 5 = 900°

Sum the given angles in the polygon and equate to 900

125 + 126 + 158 + 120 + x + 139 + 121 = 900

789 + x = 900 ( subtract 789 from both sides )

x = 111

sladkih [1.3K]3 years ago
4 0

Hi, hope this helps :)

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