00:01
In this problem, we will cover graphing in 3d space.
00:06
So we are given four points that correspond to the top four vertices of a cube in 3d space.
00:16
So i have sketched to the left, the top view of the cube.
00:21
So we do not see the x -axis, but we do see the x and y axes and the respective points.
00:28
And we want to know what the center of the cube is.
00:35
So to find that out, we would first have to figure out the distance between the points, which would tell us the side lengths of each side of the cube, which would make it easier to find the center of it.
00:53
So judging by the coordinates, we can look at either the x coordinates, or the white coordinates, but i'm going to choose the x.
01:05
Let's choose the bottom two points.
01:10
We see that the vertis, the edge point on the lower left hand corner has an x coordinate of negative 1, and the corner point in the lower right hand corner has an x coordinate of 4.
01:27
And from this we can see that the distance between those two points is five units.
01:35
And that means that the length of each side of the cube is equal to five units as well.
01:45
So we're just going to write this up the side.
01:48
Side length equals five units...