Ok, so:
Let's look at the cone:
The cone has a relation with the equation of dilating the cylinder by 1/3, as this:
V cone = (1/3) * pi (r)^2 * h
V cylinder = pi * (r)^2 * h
Then, the cross-section of the cylinder being dilated by 1/3 (which is between 0 and 1) gives the cone.
So, cone is a solid whose cross sections are dilations of some two- dimensional shape.
Ok, then, the volume of a triangular prism is given by:
V = 0.5 * b * a * h, where h is ths height, b and a are its sides.
The volume of a triangular pyramid is given by:
V = 1/3 ( Base area * height).
If we do not know the Base area, we can write it like b*a.
So, these two equations has a relation, as this:
(0.5 b*a*h) / (1/3 b*a*h) = 1.5
This means that if we multiply the volume of the triangular pyramid by 1/1.5, the result is 0.5
Then, the cross-section of the triangular pyramid being dilated by 1/1.5 (which is between 0 and 1) gives the triangular prism.
So, the answer would be Cone and triangular prism.