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y
         -=M•J:419~                                                  ./1·  :  :  :  :  :  :  :  :  :  :                          ~=M•l:419~
                     PAGE 52                                         10  9   •  •   •  •   •   ••  '  j   •••                                 PAGE 53
                                                                                •••
                                                                     7   ••  f   •••  +   •••
                                                                     •Lllil· t  ·A·• .. ·
                                                                     6   •.  L-------•,  ••
                                                                     5   ••••••••••
                                                                     "  ......... .        •  In diagram a, all the paints
                                                                                            hove the same x-co-ordinote.
                                                                     3   ••••••••••                          'L,
                                                                                            True or false?
                                                                     2   ••••••••••
                                                                     1   ••••••••••
                                                                                           •  What can you say about
                                                                     0              x       all the blue points an each
                                                                       1   2   3   <I   5   6   7   8   9   10
                                                                                            of these diagrams?
                                                                                          'L,  'L,

                                                                                                                ......
                                                                                          dLY  ecY······  .
                                                                                                                .  .  .  .  .
                                                                                                                . .  .  .  .  .
                                                                                                                .  .  .  . .  .
                                                                                                                .  . . .  .  .
                                                                                                     x                  x

         rn-oo                                                                             [I]


         Practical: constructing squares on the top half of RM G and listing the            Practical: repeating [JJ - [j] for oblongs and explaining patterns in the
         co-ordinates.                                                                      co-ordinates.

         ~                                                                                  Challenge
                                                                                            a  False
         a  (1,q) and (1,4) or (10, q) and (10, 4)
                                                                                            b  Allx-co-ordinates= 0
         b  ( 1,  14) and ( 1, 7) or ( 15,  14) and ( 15, 7)
                                                                                            c  All y-co-ordinates = 0
                                                                                            d  The x- and y-co-ordinates are equal.
         a  yes      b  no       c  no       d  yes                                         e  The co-ordinates add to 5.




         Open: explaining how to recognise a set of co-ordinates which form the
         vertices of a square. There will be a maximum of two different numbers for
         the x-co-ordinate and a maximum of two different numbers for they-co-
         ordinate. Each x-co-ordinate is paired to each y-co-ordinate.
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