Classifying & Sorting Polygons
T.I.P.S.
Students should be able to classify and sort polygons based on the number of sides and number of vertices. These shapes may include circles and polygons such as a triangle, quadrilateral, rhombus, rectangle, square, pentagon, hexagon, trapezoid, and parallelogram, up to polygons with 12 sides. Students should remember that the attributes of orientation, size, color, and texture do not help identify two-dimensional figures.
Example
Use the polygons shown below to answer the following questions.
a) Which polygon has the most sides?
b) Which polygon has 5 fewer vertices than Figure A?
c) Which polygons have the same or more sides than Figure D?
d) Zach said that a square is a quadrilateral. Anna said that a square is a square, so it is not a quadrilateral. Who is right? Explain your thinking?
Hint
Possible Solutions
Digital Tools
Click on the following links for interactive games.
Polygon or Not?
Polygon Game
Open and Closed Shapes
Polygon Shape Shoot
Classifying Polygons
Resources
Click on the following links for more information.TEKS
2.8 Geometry and measurement. The student applies mathematical process standards to analyze attributes of two-dimensional shapes and three-dimensional solids to develop generalizations about their properties. The student is expected to: (C) classify and sort polygons with 12 or fewer sides according to attributes, including identifying the number of sides and number of verticesFeedback
