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    Exercise 7A

                                                                                                    21 st
                        1.  Complete the following table.                                          Century   #Computational Thinking
                                                                                                    Skills

                             object      Shape     number of  number of            number        number of  number of
                                                      faces      plane faces      of curved        edges         vertices
                                                                                     faces

                            a.          Cuboid

                            b.

                            c.

                            d.

                       2.  Answer the following questions:
                           a.    Is a cube a cuboid?                                        ___________

                           b.    Is a cuboid a cube?                                        ___________

                           c.    Are all the edges of a cuboid equal?                       ___________
                           d.    Are all the edges of a cube equal?                         ___________

                           e.    Does a cylinder have any straight edge?                    ___________

                           f.    How many corners are there in a cone?                      ___________
                           g.    How many plane faces does a cylinder have?                 ___________

                       3.  Write the names of two objects that have the following shapes: (a) cylinder (b) cone.

                       4.  Identify the shape of the solid shown here. What shape will you get if you join
                           two such solids face to face?

                      5.  Circle the shape which is a combination of the given shapes.

                           a.                                                          or

                           b.                                                          or

                           c.                                                          or

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                                                                                                    Geometry

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