It is often referred to as a "net." In higher-level mathematics, especially topology, the word "surface" can be used.
the flat surfaces of a solid figure are the
A a solid figure on a flat surface is a plane figure (I do believe)
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.
If you had a 3D shape made out of paper, that was all folded and taped together, and you pulled the tape off and layed the figure out flat, then you would get the net of the three dimensional solid.
the flat surfaces of a solid figure are the
A a solid figure on a flat surface is a plane figure (I do believe)
The flat surface of a solid figure is called a face. For example, a rectangular prism has 6 flat surfaces and therefore 6 faces.
SQUARE
net
A square
A face is the flat surface on a solid figure. For example, a triangular prism has five flat surfaces and therefore five faces.
If you had a 3D shape made out of paper, that was all folded and taped together, and you pulled the tape off and layed the figure out flat, then you would get the net of the three dimensional solid.
A net for the 3D shape.
The net of a 3D shape
A sphere.
A facet.