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.
Linear Perspective. Linear perspective was invented by artists in the 1500s. It is a great way to create realistic 3 dimensional drawings because it reproduces the way we see. This is achieved by drawing lines which converge towards and appear to meet on one or more vanishing points on the horizon.