800÷12=66.6666666667
hope it helps!
btw that my actual answer. it really long.
If the diameter of this circle is .96, then the radius is .48. The h and k values of our center are (-2, 5), and the standard form of a circle is

. We will fill in accordingly.

. That simplifies to

. That's the equation of the circle that will completely enclose the quarter.
Similar triangles that have a scale ratio other than 1 are not congruent triangles.
The true statement about the proportions of the sides is 
The scale ratio is given as: 5 : 2
And the corresponding sides are given as:
- AB and DE.
- BC and EF.
- CA and FD.
The above highlights mean that,

Hence, the true statement is 
Read more about similar triangles at:
brainly.com/question/14285697
I’m going to try to answer these to the best of my ability.
1. Plane D
2. Plane C
3. AB
4. No
5. I don’t believe so because it doesn’t look like C is on the same plane as a AB and D.
6. I think so, yes! Collinear means that they are on the same line, and it looks like if you put a line between those two to connect them, they would connect perfectly!
7. B possibly? Because it looks like B, C, and D are all collinear and that they would pass through a straight line. A doesn’t look like it’s collinear with the rest of them.
8. No
9. Yes
10. Yes
I’m sorry if any of those are wrong, but I did make sure to try and put some explanations for some of them so you saw why I gave the answer that I gave! I hope that helped and like I said, I’m sorry if any of them are wrong, I tried my best!