Page 215 - C:\Users\azizu\Documents\Flip PDF Professional\Matematics-Form-1-1\
P. 215

How do you draw, label and name a polygon?
                                                                                   LEARNING
                                                                                         STANDARDS
                                                                                 Draw polygons, label
               A polygon is named according to the number of its sides.          vertices of polygons
                                                                                 and name the
                                                                                 polygons based on
                                                                                 the labelled vertices.




                 Name of
                 polygon

                                Triangle         Quadrilateral       Pentagon           Hexagon
                 Number            3                  4                  5                 6
                 of sides



                 Name of
                 polygon
                               Heptagon            Octagon           Nonagon            Decagon
                 Number            7                  8                  9                 10
                 of sides

               A polygon can be drawn according to the following steps.

                 Identify the       Mark points             Join all the points       Label the
       CHAPTER
                 number of          equal in number         with straight             vertices and
       9
                 sides of           to the number           lines to form a           name the
                 the polygon.       of sides.               closed figure.            polygon.

                            2

               Draw a polygon with six sides. Then label and name
               the polygon.                                                    The vertices of a polygon
                                                                               are usually labelled in
                                                                               alphabetical order and
                                                                               the polygon is named
                                                            D                  either clockwise or
                                                                   C           anticlockwise of
                                                    E                          the vertices.

                                                       F         B      Make sure that when
                                                             A          drawing a polygon, do
               Thus, the polygon is a hexagon ABCDEF.                   not mark two or more
                                                                        points that can form a
                                                                        straight line.


           204
           Chapter 9



       09 TB Math F1.indd   204                                                                       11/10/16   12:18 PM
   210   211   212   213   214   215   216   217   218   219   220