the equation a= 180(n-2)/n represents the angle measures, a, in a regular n-sided polygon. When the equation is solved for n, n is equal to a fraction with a denominator of a – 180. What is the numerator of the fraction?

Question

welshfella · Answer

a = angle measures  Do you mean the measure of one angle in the polygon or the total measure of all the angles?

anonymous · Answer

the equation a= 180(n-2)/n represents the angle measures, a, in a regular n-sided polygon. When the equation is solved for n, n is equal to a fraction with a denominator of a – 180. What is the numerator of the fraction?

anonymous · Answer

sorry i forgot to write the equation in

welshfella · Answer

an = 180n - 360
an - 180n = -360

can you continue?

anonymous · Answer

ummm, maybe?

welshfella · Answer

factor the LHS . Take out n.

anonymous · Answer

What is LHS?

welshfella · Answer

the left side of the equation

anonymous · Answer

Okay, sorry i'm not the smartest... at all

welshfella · Answer

n is common to both terms

anonymous · Answer

alright, so do i divide n from both sides?

welshfella · Answer

no factor an - 180n
= n(a-180) = -360
now you divide both sides by a - 180

welshfella · Answer

you have the numerator on RHS already

anonymous · Answer

Alright..

welshfella · Answer

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