Each image below links to a step‑by‑step GeoGebra applet, where you can move forwards and backwards through the construction or watch a short animation of how it unfolds. in some applets, the blue circular points are movable. these applets are also collected in this GeoGebra book.
square, given the median
square, given the diagonal
square, given the edge
square, given the apothem
rectangle, given the diagonal
rhombus, given one of the diagonals
rhombus, given the edge
moving geometry 