It is called a face.
The answer is a cone
A conic section.
A polygon is a many sided 2-dimensional figure, and thus could never be "solid" Alternatively, it could be "one face that is a polygon". In that case the solid could be like a pyramid that morphs into a cone or a part-sphere. The base would be the one polygon, the other face would not.
A face would be considered one flat side of a solid geometric figure.
A square pyramid
A cone, possibly.
A pyramid is a solid figure with one vertix.
An irregular blob, an ellipsoid, a sphere, a toroid (doughnut) are some examples.
The solid shape that has one square face and four triangular faces is called a pyramid. If you were to have a shape that had four triangular faces and no square face, it would be called a triangular pyramid.
A cylinder and a cone. If you look up 'space figure' in images you should get the idea.
cone +++ A sphere or other full solid of revolution generated about either axis where the curve meets that axis in 2 places, and those intercepts are the solid's poles. (A cone has 2 faces)
A pyramid with a square base is called a pentahedron. This is because it is a solid figure that has five faces, and each one of its faces can be turned by 120 degrees.
Yes, the point on the cone is a vertex.Typical math textbooks define a cone as "A solid figure with one circular face and one vertex." So yes, there is one vertex.
A pyramid is a solid figure with one face that is a polygon and three or more faces that are triangles with a common vertex. Yeah, pg. 114 in the math workbook is a little hard, and the guy who answered this before me thought it was funny to improve the answer by saying the answer was 45. That's just not mature. I don't get it. Anyway, I hope you finish your homework at this rate.
A cube is one of them
-- You can only do one solid figure at a time. -- Pick one solid figure to work on. -- Stare at it for a while. In your mind, look at all of its flat faces, even the ones you can't see in the picture. -- One at a time, write down the area of each flat face. -- When you have them all, add up all the areas of the flat faces. -- The sum of all the faces is the area of the whole solid figure. If you're doing this in the second grade, then you must be pretty smart. I'm proud of you.