GeoGebra is a free software for the teaching and learning of mathematics for all students around the world. However, GeoGebra was introduced and being used in SEAMEO RECSAM, Penang since 2010 in its training programmes under Dr Daniel Leong, former Head (TPD), Dr. Waraborn and Dr. Annamalai Chockalingam.
This small book authored by Dr. Mohd. Sazali Khalid and Associate Professor Dr. Zaleha Ismail (UTM) hopefully, can further help teachers and students from other South East Asia countries in the learning of Geometry which forms one of the four important domains in Mathematics under SEA-BES (South East Asia — Basic Education Standards).