This diploma thesis focuses on geometric ornaments in the Islamic art. I am focusing on the definition of the Islamic art and its evolution in the first part of this thesis. The reader is getting to know the basic techniques, motifs and elements used to create the geometric ornaments in the following chapters. I am also mentioning their possible division into groups according to the polygon which they are based on. The main part of the thesis focuses on a description of the process of creation of the Islamic geometric patterns. The end of the thesis focuses on usage of the topic during Mathematics at primary school and secondary school. The usage would be in a form of worksheets.