Cone
It is a face.
A face.
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.
Each flat surface is a face
A a solid figure on a flat surface is a plane figure (I do believe)
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 plane
rectangle
face
Cone
cone
A cylinder or a cone. Or a hemisphere.
Soda can or cylinder
a line