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Mathematics 16 Online
OpenStudy (anonymous):

What type of triangle is formed by joining the points D(7,3), E(8,1), and F(4,-1)?

OpenStudy (alekos):

why dont you graph it out?

OpenStudy (anonymous):

I did but I don't know the difference between a scalene or isosceles triangle.

OpenStudy (anonymous):

It is an isosceles triangle

OpenStudy (anonymous):

Thank you

OpenStudy (anonymous):

no problem

OpenStudy (alekos):

No way

OpenStudy (alekos):

its not iscosceles

OpenStudy (solomonzelman):

|dw:1436457540281:dw|

OpenStudy (solomonzelman):

so if you find all the distances by distance formula, then 2 must be equivalent

OpenStudy (solomonzelman):

I won't work it out in whole now tho'

OpenStudy (alekos):

i'm afraid not. the lengths are 5, sqrt20 and sqrt5

OpenStudy (solomonzelman):

(√20)²+(√5)²=5² is true:)

OpenStudy (solomonzelman):

and now it is simple.....

OpenStudy (alekos):

but that doesnt make it isosceles

OpenStudy (solomonzelman):

Yes, for sure not... .

OpenStudy (solomonzelman):

none of sides are equal so it is for sure not isosceles.

OpenStudy (alekos):

i get it isosceless :))

OpenStudy (alekos):

you're a funny man

OpenStudy (solomonzelman):

no, because I thought that you thought that I thought that it is isosceles.

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