Certainly the formula can be used. Yet should you plot the points (or look at the coordinates) you can see:

AB = 2

BC = 2

CD = 2

DE = 4

EF (this one needs the formula)

FA = 4

David G.

asked • 09/11/16If you have the points (-2,4) (0,4) (2,0) (2,-2) (0,2) (-2,2), how can you find the perimeter? I've been on this for hours now and nothing on the internet seems to understand it.

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Certainly the formula can be used. Yet should you plot the points (or look at the coordinates) you can see:

AB = 2

BC = 2

CD = 2

DE = 4

EF (this one needs the formula)

FA = 4

David,

You need to calculate the distance between each adjacent pair of coordinates.

The distance formula is

d = √[(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2}]

This is what I have for your points in order

A (-2,4)

B (0,4)

C (0,2)

D (2,0)

E (2,-2)

F (-2,2)

So calculate the distance using the given formula for

AB

BC

CD

DE

DF

FA

and sum

That will be your perimeter.

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