00:01
This question is asking us to find the area of a triangle given three points on a coordinate plane.
00:06
So our three points are negative 2, 1, 4, 1, and then 1 negative 5.
00:19
So these are the three points, and i have created a triangle.
00:22
This triangle looks upside down, but the volume for area is still the same.
00:27
It is the area equals one half times the base times the height.
00:34
Oops, times the height.
00:37
So when i'm counting the base, i always like to compare my points and their relation to zero.
00:44
So for example, this point, the distance from zero to negative two is two.
00:50
And then the distance from zero to this point would be four...