3-dimensional shapes made by extruding a polygon are called prisms.In this instance it would be a triangular prism.
A cube is a solid figure called a polyhedron. A polyhedron is a solid figure with all flat faces. So a cone would be a solid figure but not a polyhedron becasue it has a curve and does not have all flat faces.
A polygonal pyramid.
octagonal prism (i guessed)
a polygonal prism or a polygond
It is a prism.
a rectangular pyramid and a square pyramid
The description given fits to that of a pyramid
A hexagonal pyramid.
A triangular based pyramid would seem to fit the given description
'Enneahedron' - a solid figure with nine faces
It could be a pyramid shape
I need help with that too!
Volume is the amount of space a solid takes up. It is like the area of a polygon, but extends in 3 dimensions while a regular solid is a three dimensional figure where all of the faces are a regular geometric figure, like a cube whose faces are all squares.
A solid figure with twenty faces is called an Icosahedron.
were two or more faces of a solid figure