Constructing a regular octagon with straightedge and compass, inside a given circle

This video shows how to construct a regular octagon inside a circle, using only a ruler and a compass. The circle become the circumcircle of the octagon. This construction was selected by a computer to have as few steps as possible.

For more videos and math help, see http://www.dr-mikes-math-games-for-ki...

Music "Autumn Day" by Kevin MacLeod, http://www.incompetech.com

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• #octagon_mathematical_concept
• #compass_and_straightedge_construction
• #circumscribed_circle