https://www.onlinecviceni.cz/exc/pub_list_exc.php?action=show&class=6&subject=Matematika&search1=08.+Geometrie&topic=12.+Kv%C3%A1dr+%E2%80%93+objem#selid https://www.onlinecviceni.cz/exc/pub_list_exc.php?action=show&class=6&subject=Matematika&search1=08.+Geometrie&topic=13.+Kv%C3%A1dr+%E2%80%93+povrch#selid https://www.onlinecviceni.cz/exc/pub_list_exc.php?action=show&class=6&subject=Matematika&search1=08.+Geometrie&topic=14.+Krychle+%E2%80%93+objem#selid https://www.onlinecviceni.cz/exc/pub_list_exc.php?action=show&class=6&subject=Matematika&search1=08.+Geometrie&topic=15.+Krychle+%E2%80%93+povrch#selid krychle_kvadr krychle, kvádr