I'm not sure my answer is correct for this question, would anyone be kind enough to look it over for me? I'll post my anwers below.

The vertices of a triangle are J(-2,2), K(-1,3), and L(5,1).

a) Is triangle JKL an equilateral, isosceles, or scalene triangle?

First I calculated the lengths of the triangles three sides.

I got: JK = square root of two, KL = square root of forty, JL = square root of fifty.

So the triangle would be scalene.

b) Determine the perimeter of triangle JKL

I added all the sides together and got approximately 14.7 units.

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Did I make any mistakes, and if so, could you please explain how I should have done this? Thanks a million.