Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 117 - Touchpad Mathematics_Ver1.0_C4
P. 117

    E:\Working\Orange_Education\TouchPad_Maths_4\Open_Files\Chap_07\Chap_07
                     \ 10-Nov-2025  Bharat Arora   Proof-8                                    Reader’s Sign _______________________ Date __________

                    Use the nets given at the back of the book to make the models of prisms and pyramids
                    shown below:

                                          prisms                                            pyramids

                                                 Triangular
                                                    Prism

                                                                           Triangular
                                                                            Pyramid
                                                                                                              Pentagonal
                                                                                                               Pyramid

                                                        Hexagonal                       Square
                                  Square                  Prism                        Pyramid
                                   Prism

                    example. Look at the shapes of prisms and pyramids and write your observations.

                    Solution.    A prism is a solid shape that:                 A pyramid is a solid shape that:

                                    • Has two flat ends called bases.              • Has one flat base.
                                     They are the same shape and                   • Has triangular lateral faces that

                                     size.                                         come to a point at the top (called
                                    • Has rectangular lateral faces.               the apex).

                                Exercise 7A

                        1.  Ramu is playing with blocks. He has made a tower using his blocks as shown

                           alongside. Can you identify which kinds of shapes the tower has?

                       2.  Ria has made a few models of solids using straws and clay.

                                       i.               ii.              iii.           iv.                v.
                           Identify the shapes that have:

                           a.  5 flat faces                 b.  8 vertices                  c.  less than 10 edges

                                                                                                                  115
                                                                                                    Geometry

| 112 113 114 115 116 117 118 119 120 121 122 |