Why are repetitive geometrical shapes and vegetal patterns used in islamic art?

Which of the following is not a characteristic of bebop? reharmonization and chord substitution common emphasis on improvised solos new repertoire created from jazz standards using new melodies general attitude of restraint, tranquility

Ashape is a three-dimensional form or a two-dimensional form?

In 1401 a competition to create a set of bronze doors for the baptistery of florence cathedral was held, and this competition is often credited with the beginning of renaissance art t or f?