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