Question

the sum of all interior angle of 11 sided polygon​

Answer 1

Hi there!hope it helps:-

#All sides are the same length (congruent) and all interior angles are the same size (congruent).

#To find the measure of the angles, we know that the sum of all the angles is 1620 degrees

#And there are eleven angles... So, the measure of the interior angle of a regular 11-gon is about 147.27 degrees.

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Answer 2

Answer:

Step-by-step explanation:  (n-2)*180

                                          (11-2)*180

                                              9*180

                                       =1620