Geometri
Femhörningens vinkelsumma: https://www.geogebra.org/m/pxue2m7h
Pythagoras sats 1: https://www.geogebra.org/m/dBu3hnqx
Pythagoras sats 2: https://www.geogebra.org/m/xzhpcx7r
Vinklar vid parallella linjer: https://www.geogebra.org/m/ztgesgr6
Triangelns area: https://www.geogebra.org/m/TJdjAWwV
Cirkelns area: https://www.geogebra.org/m/q4kwqgxg
Volymen av ett rätblock: https://www.geogebra.org/m/uksjm7kk
Area- och volymskala: https://www.geogebra.org/m/xkfgcabv
Proof without words (engelsk bok): https://www.geogebra.org/m/jFFERBdd
Quadrilaterals (engelsk bok): https://www.geogebra.org/m/GFwZ5qdf
Surface area and volume (engelsk bok): https://www.geogebra.org/m/s7TznqSP