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    Look at these polygons that can be made using the repeat block.

                                  Polygon                                         Command

                       Triangle                          Repeat 3 [Move 100 Steps → Turn 120 degrees]

                       Square                            Repeat 4 [Move 100 Steps → Turn 90 degrees]

                       Pentagon                          Repeat 5 [Move 100 Steps → Turn 72 degrees]

                       Hexagon                           Repeat 6 [Move 100 Steps → Turn 60 degrees]

                       Heptagon                          Repeat 7 [Move 100 Steps → Turn 51 degrees]

                       Octagon                           Repeat 8 [Move 100 Steps → Turn 45 degrees]

                       Nonagon                           Repeat 9 [Move 100 Steps → Turn 40 degrees]

                       Decagon                           Repeat 10 [Move 100 Steps → Turn 36 degrees]

                      To draw polygons in Scratch, you must remember three points:

                      1.   You must know the number of sides in the shape. This is the value to be given in repeat
                         block.

                      2.  Each time a repeat command is used, you draw a line and turn at a corner.

                      3.  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 in the shape.

                      Drawing a Square With and Without Using Repeat Block

                      Create the given Script and observe the sprite moving and turning only four times to draw

                      a square using repeat block. Click four times on the  when         clicked  block to draw a square
                      without using repeat block.

                       when   clicked                                     when    clicked
                            pen down                                           pen down
                       repeat  4                                               set pen color to

                         move    100  steps                                    set to pen size  5
                         turn     90  degrees                              move   50  steps
                                                                           turn     90  degrees

                      106   Premium Edition-IV

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