1.

What is the measure of angle A if the other angle of the given ? Name the plygon.71 degree, 137 degree, 130 degree, 142 degree, A, 150 degree.

Answer»

Answer:

Step-by-step explanation:

ANSWER

As we know that,

INTERIOR ANGLE in a polygon =  

n

(n−2)×180°

​  

 

Whereas n is the no. of sides.

Since the given polygon have 7 sides, i.e.,

n=7

∴ MEASURE of interior angle =  

7

(7−2)×180°

​  

 

=  

7

5×180°

​  

=128°57  

′



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