define the following terms and use each in a sentence related to the topic. - curvilinear - form; define line and describe the different types of lines used, including their benefits.; answer the following question in 1-2 complete sentences. what are the visual elements of art?; explain the difference between positive space and negative space.; introduction to visual elements and line; identify and define the technique used by the artist to create the above portrait.; where has the artist used texture in their piece of art? is it effective?; line is defined as a