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Home > CC2 > Chapter 9 > Lesson 9.2.1 > Problem 9-55


Read the Math Notes box in this lesson. Use the information to determine whether each shape below is a polygon.  

  1. Front view of an ice cream cone.

    Not a polygon

  1. An outlined right pointing arrow.


  1. A crescent moon. 

    A polygon is a shape made of straight-line segments that are connected.

    Does this shape have curves or bends?
    If so, would this shape be a polygon?

  1. A rectangle, but at each corner, it turns in, and back out, creating a rectangle with missing corners.

    See part (c).