Question

Find the perimeter of a triangle with vertices (2,4) (-1,3) and (2, -3).
(show your work on graph paper)

Answer 1

i don't have graph paper

Answer 2

use distance formula three times for this one

\[\sqrt{(2+1)^2+(4-3)^2}+\sqrt{(-1-2)^2+(3+3)^2} +7\]

Answer 3

why three times?

Answer 4

There are three sides of a triangle.
(2,4) -> (-1,3)
(-1,3) -> (2,-3)
(2,-3) -> (2,4) (which is a vertical line, so we technically can just look at the distance as a difference: 4-(-3), or 7.)

The perimeter is the sum of all three of these sides,