In what place is the digit 1 in the number 607.91?

hundreths

Step-by-step explanation:

Yes

Step-by-step explanation:

Mathematically, when points are co-planar, what it means is that they exist in the same plane

Now, looking at the 4 points, we can see that they exist on the same x-like plane that is both perpendicular to like H through C

Hence, we can simply opine that these points exist in the same plane and are essentially co-planar