Math Problem Statement

1. Является ли граф, изображённый на рисунке, деревом? 2. Сколько рёбер у данного графа? 3. Сколько вершин у графа, изображённого на рисунке? 4. Сколько концевых вершин у графа, изображённого на рисунке?

Solution

Let's analyze the graph in the image and answer the questions step by step.

  1. Is the graph depicted in the image a tree?
    A tree is a connected graph with no cycles. It appears that the graph in the image is connected and has no cycles, as it is branching out. Therefore, this graph is a tree.

  2. How many edges does the graph have?
    In the graph, edges are the connections between the vertices. From the image, we count the total number of edges.
    The graph has 7 edges.

  3. How many vertices are in the graph?
    Vertices are the points where the edges meet. The graph has a total of 8 vertices.

  4. How many terminal vertices does the graph have?
    Terminal vertices (or leaves) are vertices with only one connecting edge. From the graph, we observe 4 terminal vertices.

Would you like to dive into more details on any of these aspects? Let me know if you have any questions.

Here are some related questions:

  1. What is the difference between a tree and a general graph?
  2. How can we check if a graph is a tree using properties like connectivity and cycles?
  3. How do we calculate the number of edges in a tree based on the number of vertices?
  4. What are the properties of terminal vertices in trees?
  5. How does a graph with cycles differ from a tree?

Tip: In any tree graph, the number of edges is always one less than the number of vertices.

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Math Problem Analysis

Mathematical Concepts

Graph Theory
Trees
Vertices
Edges
Leaf Nodes

Formulas

In a tree, the number of edges is equal to the number of vertices minus one: E = V - 1

Theorems

A tree is a connected graph with no cycles
In a tree with V vertices, there are V - 1 edges

Suitable Grade Level

Grades 9-12