Page 23 - 新思维数学活动用书5 样章
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2    2D shape and pattern


               2.2  Symmetry






             Worked example 2
                                                                                     line of symmetry
             Colour the squares to make a symmetrical pattern where                  symmetrical
             the dashed line is a line of symmetry.
















                                                              Place a small mirror along the mirror line
                                                              to see what the complete symmetrical

                                                              pattern will look like.




             Reflect the shaded squares across the            Squares that are next to the mirror line
             mirror line.                                     are reflected to squares that are next to

                                                              the mirror line on the other side.

                                                              Squares that are one square away from
                                                              the mirror line are reflected to squares

                                                              that are one square away from the mirror
                                                              line on the other side.



             Answer:























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