Question

What is the perimeter of triangle ABC with vertices a(-2,9) b(7,-3) and c(-2,-3) in the coordinate plane?

Answer 1

Please help. I'll give medal!

Answer 2

Hey there! We'll need to use the distance formula for this! Do you know the distance formula?

Answer 3

I forgot it.

Answer 4

\(\LARGE \text{Distance } = \sqrt{ (x_2 -x_1)^2 + (y_2 - y_1)^2}\)

Answer 5

So we need to find the distance between ab, ac, and bc. And then we add them all up to find the perimeter!

Answer 6

Alright, 12 + 9 + 15 then?
So 36....
Thank you so much for explaining!! :)

Answer 7

Correct! :)