Answers

2014-06-02T17:48:32+05:30
(-1, -3) and (2, -1)

rad (-1-2)^2+(-3+1)^2=
rad(-3)^2+(-2)^2=
rad 9+4= rad 13

(2, -1) and (-1 ,1)
 rad (2+1)^2+(-1-1)^2=
rad 3^3+(-2)^2=
rad 9+4= rad 13

(-1-3) and (-1, 1)=
rad (-1+1)^1+(-3-1)^2=
rad 0^2+(-4)^2=
rad16=4

=> the triangle is isocel
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