Find the size of the final unknown interior angle in a polygon whose other interior angles are: Find the size of the final unknown interior angle in a polygon whose other interior angles are:

162°, 110°, 125°, 138°, 105° and 98°

the final interior angle is 162

Step-by-step explanation:

To find the sum of interior angles use the equation (n-2) · 180. Then add all of the interior angle together and subtract it from the sum of interior angles. There you would have your answer.

(n-2)·180= (7-2)·180= 5·180=900  

162+110+125+138+105+98=738

900-738=162

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

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