Dear all, My question is how to create a circular spatial polygon, with 8 arcs of 45 degrees, and radius measuring 15m. Having in the centre point the UTM coordinates, zone 20S. x= *673593.21* *y= **9365367.08* *Thanks* -- Kátia Emídio da Silva DSc Eng. Florestal Manaus/AM Forestry Engineer Manaus/AM-Brazil [[alternative HTML version deleted]]