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Mathematics: Post your doubts here!

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Thats exactly what i was wondering about...
If it's an irregular polygon, and you've got 2 equal sides, the angles are not necessarily equal. This is due to the fact that the other lines making those 2 angles may not be equal. Although, you can create an isosceles triangle this way by drawing a line, this creates 2 equal angles as the sides are equal. Or so I think.. It'd be better if I can draw you a diagram but Im currently out.

misscute406 Are you sure you have the right formula?
 
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If it's an irregular polygon, and you've got 2 equal sides, the angles are not necessarily equal. This is due to the fact that the other lines making those 2 angles may not be equal. Although, you can create an isosceles triangle this way by drawing a line, this creates 2 equal angles as the sides are equal. Or so I think.. It'd be better if I can draw you a diagram but Im currently out.

misscute406 Are you sure you have the right formula?
yeah that formula is right!! that is the formula to find out each interior angle
 
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OMG!! hey that is only for fractions which doesn't have an unknown!!These kind of fractions have an unknown x. If you don't cross multiply then you cannot find the unknown!!
Why cross multiply? It have addition side in b/w and both have same denominator
like 4/2 + 4/2 = 8/2
 
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yeah that formula is right!! that is the formula to find out each interior angle
You mean this formula is right: n(n-2)/180 ? Okay.
Say I have 4 sides (quadrilateral), so n = 4,
4(4-2)/180 = 2 /45. But thats not right as each angle is 90..

The right formula is (n-2)*180 / n
 
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oops sorry!! it is (n-2)180/n
extremely sorry guyz!! :( i was a bit confused
You mean this formula is right: n(n-2)/180 ? Okay.
Say I have 4 sides (quadrilateral), so n = 4,
4(4-2)/180 = 2 /45. But thats not right as each angle is 90..

The right formula is (n-2)*180 / n
 
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Part (c)
(I've never faced any trouble in this kind of questions. .. don't knw why i can't solve this one :mad:)
 

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