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?
A plane
The crust is the solid surface of the Earth.
A tetrahedron is a solid figure with four flat surfaces that are triangles. Each face of a tetrahedron is a triangle, making a total of four triangular faces in the shape.
A solid shape that can slide is a cube. Its flat surfaces allow it to easily slide along a surface.
A flat side on a solid object means that the surface area is planar and does not curve or bulge in any way. It is a straight and continuous section of the object that does not have any bumps or indentations. It provides a stable base for the object to rest on or be positioned upright.
Cone
A a solid figure on a flat surface is a plane figure (I do believe)
If you mean 1 flat surface and 1 vertex, then the only thing I can think of is a cone.
the flat surfaces of a solid figure are the
The flat surface of a solid figure is called a face. For example, a rectangular prism has 6 flat surfaces and therefore 6 faces.
A face is the flat surface on a solid figure. For example, a triangular prism has five flat surfaces and therefore five faces.
a oval or heart
A plane
rectangle
face
A sphere.
cone