Page 167 - New Medley 5 Semester 2
P. 167

D.  In the circle given alongside shade its interior region.                            J
              Now, recognise the points which lie:
                                                                                          A                    G
              1.  on its exterior.                                                              I           H
                                                                                                      O
              2.  in its interior.                                                          B
                                                                                                              F
                                                                                                        D
              3.  on the circumference.
                                                                                              C          E

                                         Construction of a Circle



        A  circle  is drawn  with  the  given  radius  using  a  pair  of  compasses  and  a
        pencil.


        Let us draw a circle of radius 4 cm.

        Steps of Construction



          1. Take a pair of compasses and fix a sharpened pencil in it.

          2. Open the pair of compasses and adjust the gap between metal tip of the
              compasses and pencil tip of the compasses equal to the given radius,

              i.e., 4 cm.














                                   0  1  2   3  4  5  6   7    8    9    10    11    12    13    14    15
                                     Centimetres
                                                          SCALE      2        1       Inches  0
                                                    4
                                                             3
                                            5
                                   6

         3. Place the pair of compasses on a sheet of paper and fixing the metal
              tip at a certain point, rotate the pencil tip so that it traces a circle.


          4. Now,  join  the  fixed  point  with  any
              point of circumference and mark fixed

              point as the centre and line segment
                                                                                                               A
              as the radius.  This  is the  required                                               O 4 cm
              circle.



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