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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

                     Drawing A Circle

                     To draw a circle, create the given script in Scratch.

                                                                                             Drawing Shapes in Scratch  85

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