no
ZT=1/3 of CT. Therefore, CT=5
no
It can be but need not be.
Nicki Minaj
5
ZT=1/3 of CT. Therefore, CT=5
no
No siree
It can be but need not be.
Two. However, you can actually do it with just one. Consider the median AD of triangle ABC. Then the point G, 2/3 of the way from A to D, is the centroid. This process (2/3 of the way from the vertex to the opposite side) can be applied to any median.
yes
12
We cannot know.
Nicki Minaj
15
The area is 99.0 square units.
5