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To draw polygons in Scratch, you must remember a few thumb rules. These are as
                  follows:

                      You must know the number of sides of the shape. This is the value to be given
                    in Repeat block. For example, you give Repeat 3 to draw a triangle and 4 to draw
                    a square.


                      Each time a Repeat block is used, you draw a line and turn at a corner.
                      You must know the degree of the angle at the corner. It is very easy to calculate
                    this. Just divide 360 by the number of sides of the shape. For example, to draw a

                    triangle, the turn will be 360/3 (sides of the triangle) = 120.
                  Look at these polygons that can be made using Repeat block.


                                      Polygon                              Command

                                                         Repeat  3 Move 100 Steps Turn  120
                              Triangle
                                                         degrees
                                                         Repeat  4 Move  100 Steps Turn  90
                              Square                     degrees

                                                         Repeat  5 Move  100 Steps Turn  72
                              Pentagon
                                                         degrees
                                                         Repeat  6 Move  100 Steps Turn  60
                              Hexagon                    degrees

                                                         Repeat  7 Move  100 Steps Turn  51
                              Heptagon
                                                         degrees

                                                         Repeat  8 Move  100 Steps Turn  45
                              Octagon                    degrees

                                                         Repeat  9 Move  100 Steps Turn  40
                              Nonagon
                                                         degrees

                                                         Repeat  10  Move  100 Steps Turn  36
                              Decagon                    degrees




                      DRAWING A SQUARE IN SCRATCH

                  Now you will learn how to draw a square in Scratch. The steps are given below:

                  Step 1  Click on Events blocks category                 .

                  Step 2  Click and drag the        when     clicked   block to the script area.

                  Step 3  Click on Pen blocks category               .

                  Step 4  Click on         erase all  block and drag it to the script area and snap it to the
                            script.


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