This illustration shows various types of gladiators, each type with with his specific weapons attributed to him. Gladiators were swordsmen whose profession was to fight for the public amusement. Gladiators are said to have been borrowed...

The properties of the four different types of polygons--pentagons, hexagons, heptagons, and octagons--are discussed here. Some practice questions are also given to test your knowledge.

The cultural landscape of Bali consists of five rice terraces and their water temples that cover 19,500 ha. The temples are the focus of a cooperative water management system of canals and weirs, known as subak, that dates back to the...