the answer is 8
4
A 2D square has 4 edges.
A Rhombus is a square tilted to form a diamond shape
You cannot have a 2d pyramid - whether or not it is square based. The 2d cross section will depend on the plane of the cross section.
0
a 2d pentagon looks similar to a house. Basically, draw a square with a triangle on top and widen the parallel lines at the top slightly.
Just the one square flat face.
Since the square is a 2D shape, it only has one face.
A 2d shape with uncountable lines of symmetry is a circle.
Well, it is because of the appearance. A square has 4 rights angles, 2 pairs of parallel lines, 2d shape, and all the sides are the same length! so look out for square's!
You cannot have a 2d pyramid - whether or not it is square based. The 2d cross section will depend on the plane of the cross section.
parrelel lines meet
Yes. Just like a square is 2D.
There is no conversion from 3d to 2d.
There are many, the simplest that I can think of is an isosceles trapezoid.
Yes.