(EXERCISE 3B
Find the sum of all interior angles of the following regular polygons.
li Hexagon
vi. Nonagon
V Polygon of 16 sides
" Polygon of 11 sides.,
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Step-by-step explanation:
formulae: (n-2)180*
where n is equal to number of sides.
i.hexagon= (6-2)180*
= (4)180*=720*
ii.nonagon=(9-2)180*=(7)180*=1260*
iii.polygon of 16 sides=(16-2)180*=(14)180*=2520*
iv.polygon of 11 sides=(11-2)180*=(9)180*=1620*
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