Question

plz help me friends plz​

Answer 1

Answer:

So the interior angle of a 9 -sided polygon is 140 ° . We can see that x and one interior angle lie on the same side of a straight line, so their sum must be 180 ° . So x = 180 ° − 140 ° , or x = 40 ° .

Answer 2

Answer:

x = 40 degrees.

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