If you mean 1 flat surface and 1 vertex, then the only thing I can think of is a cone.
Cone
The object described is a cone. A cone has one vertex (the point where the flat face meets the curved surface) and one flat face (the circular base). Due to its shape, a cone can roll along a flat surface smoothly.
It is a face.
The only thing I can think of is a cone.
It has a flat base, a curved surface area, a circular edge and one vertex.
Cone
A a solid figure on a flat surface is a plane figure (I do believe)
This is an impossibility. If it is a solid figure then it will have more than 1 surface. If it has only 1surface and it is a solid, then it must be a sphere, but the surface of a sphere is not flat is it? By using the word 'solid' then by definition, it is three dimensional and has thickness. A cylinder has no vertices , but it has 2flat surfaces. A vertex is a point where three lines meet, such as on a pyramid, which has 4 vertices. Have I forgotten something or is this a 'trick' question?
5
the flat surfaces of a solid figure are the
One of the figure which has no flat surface is Sphere.
The flat surface of a solid figure is called a face. For example, a rectangular prism has 6 flat surfaces and therefore 6 faces.
cone
A geometric shape that has one flat surface and one vertex is a cone. The flat surface is the circular base, while the vertex is the pointed tip at the opposite end of the cone. This shape is commonly seen in everyday objects like ice cream cones and traffic cones.
a square a rectange a triangle a hexagon an octogon a polygon
The object described is a cone. A cone has one vertex (the point where the flat face meets the curved surface) and one flat face (the circular base). Due to its shape, a cone can roll along a flat surface smoothly.
a cone has one flat surface one vertex and no edge.