Graph theory is a branch of mathematics that studies mathematical structures called graphs.

In this graph theory, it is important to calculate the outdegree of each node.

This node is part of the network.

This pie chart shows the company's sales.

Health is very important.

His opinion is very important.

This chart shows the increase and decrease in sales.

Please tell me your opinions, each of you.

Each student brought their own homework.

Each class conducts lessons in their respective classrooms.