How to Make a Pentagon Out of Wood

The Pentagon building is in the shape of a regular pentagon.
The Pentagon building is in the shape of a regular pentagon. (Image: Digital Vision./Photodisc/Getty Images)

Squares and rectangles are some of the simplest shapes to make from wood, and most miter boxes, used to quickly cut angles, are designed to make squares and rectangles. There are many reasons why one would want to make a more unusual shape, such as a pentagon. However, making a pentagon is trickier than making a simple square or rectangle. Technically, a pentagon is any polygon with five straight sides, but a regular pentagon has five sides of equal length and 108 degree angles. (see References 1 and 2)

Things You'll Need

  • Paper
  • Ruler
  • Pencil
  • Protractor
  • Scissors
  • Safety goggles
  • Wood
  • Saw

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Draw a line on your paper the length that you want each side of your pentagon to be. (see Reference 3)

Line up your protractor so that the middle of the straight edge is on an endpoint of your line. The line should run through the 0/180 mark on the protractor. (see Reference 3)

Make a mark at the 108 degree. This should make a wide angle. (see References 1-3)

Line up your ruler with the endpoint that you measured from and your mark. Measure the same length that you used for the first line; that is, if your initial pentagon side was 5 inches, measure a line that is 5 inches between the endpoint and angle mark.

Repeat steps 1-4 three times. The last side can be completed by drawing a line between the last two endpoints and enclosing the pentagon.

Cut out your pentagon template and trace onto your piece of wood. Cut each side carefully with any type of saw. Wear safety goggles when working with a saw.


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