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Mathematics 57 Online
OpenStudy (oleg3321):

Please help

OpenStudy (oleg3321):

OpenStudy (oleg3321):

How would i get that angle?

OpenStudy (oleg3321):

@ganeshie8

ganeshie8 (ganeshie8):

Count the number of angles it has

ganeshie8 (ganeshie8):

In other words, can you tell me how many "corners" the given polygon has ?

OpenStudy (oleg3321):

6 corners

ganeshie8 (ganeshie8):

Yes, lets use this : |dw:1468217552936:dw|

ganeshie8 (ganeshie8):

If the polygon has "n" corners, then its angles add up to 180*(n-2)

ganeshie8 (ganeshie8):

we have "6" corners, so the angles must add up to 180*(6-2)

ganeshie8 (ganeshie8):

see if you can figure out the rest

OpenStudy (oleg3321):

Huh, im confused, how do the angles add up to 180*(6-2)?

ganeshie8 (ganeshie8):

what are the angles in the given polygon ?

ganeshie8 (ganeshie8):

Can you write them down here for me

OpenStudy (oleg3321):

I know if you add all the angles we already have we get 556. 98,108,135,135,90

ganeshie8 (ganeshie8):

whats 180*(6-2) ?

OpenStudy (oleg3321):

720

ganeshie8 (ganeshie8):

So the unknown angle B must be ?

OpenStudy (oleg3321):

720-556=164 C, correct?

ganeshie8 (ganeshie8):

As always, yes. Good job !

OpenStudy (oleg3321):

Thanks, wouldn't have got it without your help. :)

ganeshie8 (ganeshie8):

yw :)

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