find the sum of measures of all interior angles of9 sides
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Answered by
1
Using formula ,(2n -4)×90 we get angle measure of a nonagon = (18-4)×90
= 14 ×90
=1260
Answered by
1
Answer:
Step-by-step explanation:
Sum of all interior angles =(2n-4)right angles
((2×8)-4)right angles
=(16-4)right angles
=12 right angles
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