Ib tug yuav nrhiav tau nyob rau hauv GeoGebra center ntawm gravity ntawm ib tug polygon. Ie. qhov chaw(CG), qhov twg paub lub ceeb thawj yog faib evenly ib ncig ntawm. Ib tug muaj peev xwm hais, yog hais tias lub xam yog teem raws nraim on to top ntawm ib koob nyob rau hauv qhov chaw ntawm gravity, ces xam ncaj nruab nrab on saum lub koob.

Danish

1. Ua ib Random duab siv. Polygon twj .
2. Nws yog tam sim no polygon1.
3. Skriv nu følgende i inputfeltet (koj tig lub tswv yim mus rau lub teb submenu qhia)..

   Hnyav Point[polygon1]

4. Tam sim no peb muaj ib lub chaw ntawm gravity rau polygon1. (På billedet er det punktet H)

Lus Askiv

Lub Function Yuav nrhiav tau los ntawm xaiv lus Askiv – nyob rau hauv chaw – hom lus – Lus Askiv.

Tom qab ntawd ua cov nram qab no:

1. Hloov mus rau hom lus Askiv. (under Chaw – hom lus – Lus Askiv)
2. Ua ib Random duab siv. Polygon twj .
3. Nws yog tam sim no polygon1.
4. Skriv nu følgende i inputfeltet:

   centroid[polygon1]

5. Tam sim no peb muaj ib lub chaw ntawm gravity rau polygon1. (På billedet er det punktet H)
6. Tam sim no koj muaj peev xwm hloov spoget rov qab rau Danish.