A projection is a 2 dimensional representation of a solid figure. See related link.
three
Plane figure
a solid
A two-dimensional representation of a solid figure is known as a net. It shows all the faces of the three-dimensional shape unfolded into a flat surface, allowing you to see how the shape is constructed and visualize its different parts. Nets are helpful for understanding the properties and structure of 3D shapes.
A pattern that you can cut and fold to make a model of a solid shape.
A photograph is a two dimensional representation of a real-life scene. A hologram is three a dimensional representation.
A map, painting, or photograph, are all two dimensional representatins of three dimensional objects
a geographical map
the difference between a two dimensional shape and and a solid is that a two dimensional shape is plane and a solid you can see the whole shape a the inside.
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A contour map, possibly.
In geometry, a solid is a three-dimensional object that occupies space, while a plane is a flat, two-dimensional surface. A solid cannot exist entirely within a plane, as it has depth, but it can intersect or project onto a plane. For example, a cube can cast a shadow (a two-dimensional representation) onto a plane, while still being a three-dimensional object. Thus, solids may interact with planes, but they exist in three-dimensional space.