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    Cylinder
                Look at the figure of a cylinder.

                    l  It has two plane faces (its top and base) and one curved
                        face. Both  the plane faces of a cylinder  are the same
                        shape and size.

                    l  It  has two  equal curved  edges  where  the  curved  face
                        meets with its plane faces.
                    l  It has no vertex.

                Cone

                Look at the figure of a cone.
                    l  It has one plane face (its base) and only one curved face.
                    l  It has one vertex.

                    l  It has one curved edge, where the
                        curved face meets with its plane face.

                Sphere
                The figure given is a sphere.

                    l  It does not have any edge or vertex.
                    l  It has a curved face.

                    l  Half  of a sphere is  called  a hemisphere. It has one  curved
                        face, one plane face and one curved edge.

                             Keep in Mind

                        Solid shapes are also known as 3-dimensional (3-D) shapes. All solid shapes have a
                        surface and occupy space.

                CombinATion of Solid ShApeS

                In our daily life, most objects that we see around us are not made up of a single solid
                shape. Instead, they are formed by combining two or more solid shapes such as a

                cube, cuboid, sphere, cylinder, cone and prism.

                for example: a.   An ice cream is a combination of a cone and a
                                      hemisphere.

                                  b.   A mace (gada) is the combination of a cylinder
                                      and a sphere.

                       126       Mathematics 3

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