3. Label the Parts of Your Diagram

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So far, you have been using shapes to show the  parts that make up the subject of your diagram.

In this video, you will label those shapes.

They are important in scientific diagrams, because they describe each part to help  people know what they are looking at.

To begin, label the first part of your diagram.

You may want to begin with the largest part.

Place the labels close to  what they’re referring to so the viewer will clearly  understand what the label relates to.

It may help to connect the word to  a part of the drawing with a line, but if you use lines, try not to cross  them to keep your diagram looking neat.

Think about what should be labelled in the figure.

If your diagram has multiple  parts that are the same, just label one of them so your diagram remains  clear and not cluttered with the same labels.

But be sure to label all of the  important parts of what you are studying so people understand your diagram clearly.

Feel free to use arrows instead if they would  work better to label some parts of your diagram.

Make each of the labels bold so they stand out.

If it would help someone  understand the diagram better, add a note at the bottom as a scale reference.

This gives the viewer an idea of  the size of the subject you drew.

This can either be a measurement or a  comparison to a common object, such as a coin.


  1. Label the important parts of your diagram.
  2. Format the text.
  3. Add a note at the bottom as a scale reference.