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    E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_08
                   \ 26-Sep-2025  Bharat Arora   Proof-10                                   Reader’s Sign _______________________ Date __________

                  SoLid ShaPES

                  We are familiar with the shapes of a cube, cuboid, cylinder, cone and sphere. These
                  are called solid shapes or 3D shapes. Let us learn more about these shapes.

                   Cube: The figure given below is a cube.                        Some examples of a cube are

                                            •  A cube has 6 faces,                shown below.
                                                12 edges and 8 vertices.

                                            •  All the edges of a cube are
                                                of the same length.

                                            •  All its faces are of the

                                                same size.

                   Cuboid: The figure given below is a cuboid.                    Some examples of a cuboid are

                                            •  A cuboid has 6 faces,              shown below.
                                                8 vertices and 12 edges.

                                            •  Its opposite faces are
                                                equal.

                   Cylinder: The figure given below is a cylinder.                Given below are some examples
                                            •  A cylinder has 3 faces             of cylinders.

                                                (1 curved and 2 plane)
                                                and 2 edges.

                                            •  Its opposite faces are

                                                equal.

                   Cone: The figure given below is a cone.                        Given below are some examples

                                            •  A cone has 2 faces (one  of cones.
                                                plane and the other

                                                curved).

                                            •  It has 1 vertex and 1 edge.

                 144                                                                                    Mathematics-2

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