- Triangle: A polygon with 3 sides and 3 vertices.
- Quadrilateral: A polygon with 4 sides and 4 vertices. Examples include squares, rectangles, parallelograms, and trapezoids.
- Pentagon: A polygon with 5 sides and 5 vertices.
- Hexagon: A polygon with 6 sides and 6 vertices.
- Heptagon (or Septagon): A polygon with 7 sides and 7 vertices.
- Octagon: A polygon with 8 sides and 8 vertices.
[Polygon] Related Worksheets and Study Guides:
.◂Math Worksheets and Study Guides Second Grade. Graphs
Study Guide
Graphs 
Worksheet/Answer key
Graphs Worksheet/Answer key
Graphs Worksheet/Answer key
Graphs Worksheet/Answer key
Graphs Worksheet/Answer key
Date Worksheet/Answer key
Area Worksheet/Answer key
Measure the mass Worksheet/Answer key
Data Worksheet/Answer key
Data
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyThe resources above cover the following skills:
Data Analysis and Probability (NCTM)
Select and use appropriate statistical methods to analyze data.
Describe parts of the data and the set of data as a whole to determine what the data show.