How many sides does a triangle have?
3
How many sides does a quadrilateral have?
4
How many sides does a pentagon have?
5
How many sides does a hexagon have?
6
How many sides does a heptagon have?
7
How many sides does a octagon have?
8
How many sides does a nonagon have?
9
How many sides does a decagon have?
10
????How many sides does a dodecagon have?
12????
A polygon whose sides are equal in length and whose angles are equal in measure
A regular polygon