Question

find the measure of an interior angle of a regular polygon of 9 sides​

Answer 1

Answer:

20

$180 \div 5$

Answer 2

Answer:

To find the value of an internal angle within this polygon, we can just multiply the number of triangles by 180 ° , then divide by the number of internal angles, which is nine. Excellent! So the interior angle of a 9 -sided polygon is 140 ° .

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