[alogo] Line of polygons

Select the number-object and, while holding down the F2 key, press the up- down- arrows on the keyboard. Watch the polygon q. It remains similar to itself. Its free vertices move also on certain lines.

The figure is constructed as follows:
1) Set four points A, B, C, D
2) Build polygon p
3) With the tool [Polygons\Polygon Compasses _ _ _ ] build polygons p1, p2, similar to p
4) Draw the lines AD and BC
5) Set a number-object
6) With the tool [Points2\Number on Line _ _ ] set two points X, Y on AD and BC respectively
7) With the tool [Polygons\Polygon Compasses _ _ _ ] build polygon q, similar to p

[0_0] [0_1] [0_2]
[1_0] [1_1] [1_2]

Produced with EucliDraw©