Yes, prisms are always 3D. It is described by taking a shape and stretching it linearly (in a straight line) so that the shape at the base is perpendicular to the sides. Also, if the stretch was "up", the top would be the exact same shape as the base. For instance, a circle stretched is a cylinder, a rectangle stretched is a box ("box" is lay term for "rectangular prism" as in "Could you pass me that rectangular prism of cereal?"). You can also stretch a line, but a line is not a shape, so the result would not be a prism. Btw, stretching a line would give you a plane; vert 2D.
There's no such thing as a two dimensional rectangular prism for a prism is three dimensional.
they both are three dimensional prism :)
a rectangular prism
yes
Yes.
There's no such thing as a two dimensional rectangular prism for a prism is three dimensional.
No. A square is a two-dimensional (flat) figure. A prism is three-dimensional.
they both are three dimensional prism :)
a rectangular prism
yes
Yes.
3 dimensional. A rectangular prism is basically a box where all 6 sides are rectangles (some can be squares, which are just special cases of rectangles). If all six are squares then the rectangular prism is a cube.
A prism or a pyramid
vertex or vertices
A three-dimensional rectangle is a prism.
No, a hemisphere is not a prism. A hemisphere is a three-dimensional shape with a curved surface that is half of a sphere, while a prism is a three-dimensional shape with two parallel and congruent polygonal bases connected by rectangular or parallelogram faces.
A three dimensional solid figure looks like a cube or a prism. Pyramids are three dimensional solid figures as well.