Trees that grow from seeds start out as tiny seedlings, usually growing directly under the parent tree--the tree that dropped its seeds. Often, those seedlings die because they are blocked from receiving sunlight and moisture. However, seedlings raised in nurseries usually do very well, depending on the species of tree.
Italian Renaissance painters and architects including Filippo Brunelleschi, Masaccio, Paolo Uccello, Piero della Francesca and Luca Pacioli studied linear perspective, wrote treatises on it, and incorporated it into their artworks, thus contributing to the mathematics of art.
Russian painter and designer, with Mondrian the most important pioneer of geometric abstract art. Born near Kiev; trained at Kiev School of Art and Moscow Academy of Fine Arts; 1913 began creating abstract geometric patterns in style he called suprematism; taught painting in Moscow and Leningrad 1919-21; published book,