Mathematics 67 Online
OpenStudy (anonymous):

The figure shown is a regular pentagon. What is the value of p?

OpenStudy (anonymous):

There's the pic

OpenStudy (anonymous):

firstly the size of one interior angle will be 108degrees

OpenStudy (anonymous):

3p=180-108 3p=72 p=24

OpenStudy (anonymous):

So wait... how did you get 108?

OpenStudy (anonymous):

180(n-2)/n use this

OpenStudy (anonymous):

180(5-2)/5 =108 for each interior angle the other formula 180(n-2) is used to find out the sum of interior angles whereas this one is used to find the size of one interior angle

OpenStudy (anonymous):

i think i get it... thanks 4 explaining it :)

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