00:01
We want to find the perimeter of a triangle with these vertices at 1, 2, at negative 3, 2, and the other at negative 3, 5.
00:09
So some of these sides we can find just by counting.
00:13
If we go from negative in the x -axis, we go from negative 3 to 1.
00:19
That'll give us that side there.
00:21
That is 1, 2, 3, 4 units long.
00:24
Long.
00:25
And this vertical side here, we go from 2 to negative 5 along the y axis, 1, 2, 3, 4, 5, 6, 7.
00:34
That's going to be 7 units long.
00:36
Now, to find this third side, the length of it, we could use the distance formula...