Who created the first system of prespective in painting

The rythmetic note that has three beats is called

Which of the following is necessary to build a skyscraper? a. wooden beams b. metal beams c. plastic supports d. all of the above

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?