Geometrical patterns usually have an error in the design. This is done so the people of Islam know that their God, Allah is flawless
Artists are restrained from making art about people and their doings. Art in Islam is seen as an act of devotion to God.
Weavings on carpet is an important art-form for Islam. The weavings include Islamic themes and geometrical designs. These carpets are made and used as prayer rugs.
Calligraphy is regarded as important and most sacred of all art-forms in Islam. The Koran includes the messages of Allah and this script is written in calligraphy.