## With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

No credit card required

# Building a tree

A very common type of hierarchical graph is a tree. Tree nodes have children. These are connected by edges and are usually displayed in rows when growing down, or in columns when growing horizontally.

We will draw a tree presenting possible math formula layouts.

## How to do it...

We will use basic TikZ, without any extra package. Follow these steps:

\documentclass{article}
2. Load the tikz package:
\usepackage{tikz}
3. Start the document:
\begin{document}
4. Begin with a TikZ picture, and specify some options for it:
\begin{tikzpicture}[sibling distance=10em,
every node/.style = {shape=rectangle, rounded corners,
draw, align=center,
top color=white, bottom color=blue!20}]]
5. Draw a node and add children to it:
 \node {Formulas} ...

## With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

No credit card required