2. SHAPES
 Definition for shape: A shape is a geometric figure that can
be described with mathematics. One way to classify shapes is
to describe a bigger shape that the shape fits inside of. For
example, two-dimensional shapes like circles will fit inside of
a flat plane. Three-dimensional objects like cubes will not fit
inside of a plane, because they are not flat.
Two shapes are said to be equal, if one can be changed into
the other by spinning, moving, growing bigger, shrinking, or
more than one of these in a combination

4. 3-D SHAPES
Three dimensional objects or solids generally have
length, breadth and height. Three dimensional objects
look different from different locations or angles.
 THREE-D SHAPS :- cube,cylinder,sphere, cone

7. A polyhedron is a solid shape bounded by
polygons whereas non-polyhedrons do
not have polygon shaped faces.
Cubes, cuboids, prisms, and pyramids are
few examples of polyhedrons.
Spheres, cones and cylinders are a few
examples of non-polyhedrons.

8. CONVEX POLYHEDRONS:

11. The column of Vertices + Faces and
compare it to Edges. The Vertices +
Faces is always two more than Edges. You
can write this down as a formula:
V - E + F = 2
vertices-edges+faces=2