# Is a tree a graph?

## Is a tree a graph?

In graph theory, a tree is an undirected graph in which any two vertices are connected by exactly one path, or equivalently a connected acyclic undirected graph. … A polytree (or directed tree or oriented tree or singly connected network) is a directed acyclic graph (DAG) whose underlying undirected graph is a tree.

## What are trees and graphs in data structure?

Graphs Data Structures A graph consists of a set of nodes and a set of edges. An edge is a pair of nodes that are connected. A path is the term used to describe traveling between nodes that share an edge. The image below shows a graph with 3 nods and 3 edges.

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## Is a binary tree a graph?

In computer science, a binary tree is a tree data structure in which each node has at most two children, which are referred to as the left child and the right child. … It is also possible to interpret a binary tree as an undirected, rather than a directed graph, in which case a binary tree is an ordered, rooted tree.

## What is the difference between tree and binary tree?

A general tree is a data structure in that each node can have infinite number of children, A Binary tree is a data structure in that each node has at most two nodes left and right. … Nodes in a binary tree cannot have more than degree 2.

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