It is a prism.
A triangular prism. In adition to the three lateral faces, it has a triangulat top and bottom.
A triangular prism.
A triangular prism would fit the given description
They are prisms.
It is a cube.
No, because if the laterals would be rectanguar, the figure will have 4 lateral vertices which in other terms, the figure wont be a pyramid. The base can be a rectangle but the laterals figures must be of 3 sides
hexagonal prism
A polygon is an inclosed figure with at least 3 sides. So yes, all retangles are polygons.
A polygon is usually defined as a plane figure bounded by straight line segments. Any figure which does not correspond to this definition would be a non-polygon. For example, triangles, rectangles, squares, and even star shapes are called polygons. A circle, semicircle or oval is not a polygon. The have curved boundaries.
A triangular prism or a cuboid as it seems would fit the given description
Polygon simply means a many-sided figure. It doesn't specify how many sides. So, for example, triangles, squares, rectangles, rhomboids, pentagons, hexagons, and so on are all polygons.
Rectangles and squares are quadrilaterals, or a polygon* with four sides. Rectangles have two sets of parallel** sides. Squares have four sides of equal length and four right angles*** for the corners. Rectangles and squares are not the same thing. * Polygon- a closed figure with straight sides. ** Parallel- two lines, that no matter how far they stretch, will never meet each other. *** right angles- a 90 degree angle.