Page 51 - ModularV1.1 _c5_flipbook
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Heptagon Octagon Nonagon Decagon
(7 sides) (8 sides) (9 sides) (10 sides)
Drawing Regular Polygons Using Repeat Command
It is very easy to draw regular polygons using the REPEAT command. When the
sprite draws a polygon, it has to walk along the sides of the polygon, turning at a
specified angle at each turn, finally turning 360° before coming back. This walking
and turning back of the sprite can be called the total sprite trip.
The degree of turn is equal to 360° divided by the number of sides. For example to
draw a square, the turtle has to turn 4 times (a square has 4 sides), and each turn is
360º/4, that is 90°. To draw a triangle, the degree of turn will be 360°/3 = 120° and
to draw a hexagon the degree of turn will be 360°/6 = 60°.
To draw polygons, follow these steps:
repeat 10
Step 1 Drag the block from Control blocks menu.
Step 2 Drag the move 10 steps block, turn 15 degrees block and
wait 1 secs block one by one and attach inside the Repeat
block.
Step 3 Change the Repeat value and Turn value accordingly.
Drawing Shapes in Scratch 49

