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Question

In a regular pentagon ABCDE, draw a diagonal BE and then find the measure of BAE

A
88
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B
108
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C
98
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D
100
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Solution

The correct option is B 108
In a regular pentagon ABCDE, BE is a diagonal.
BAE is the interior angle of the polygon.
Each interior angle of a regular polygon is = 180o(n2)n
where n= number of sides of polygon, n=5
BAE=180o(52)5=108o

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