Math CentralQuandaries & Queries


Question from Malea, a parent:

How do you find the nth term in a set of triangles, squares and pentagons?


I am not sure I understand the question.

  • A triangle is a polygon with 3 sides.

  • A square is a polygon with 4 sides.

  • A pentagon is a polygon with 5 sides.

  • A hexagon is a polygon with 6 sides.

We have a list of the names of the polygons with up to 20 sides. Usually beyond 8 sided (an octagon) mathematicians call a polygon with n sides an n-gon.

Is this what you were asking?


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