Polygon Teacher Resources
Find Polygon lesson plans and worksheets
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Interior Angles, Exterior Angles, and Diagonals of Polygons
8th - 11th CCSS: Adaptable
How does the number of sides of a polygon affect the angle measures? Learners recognize a pattern in finding the total measure of interior and exterior angles and the number of diagonals. They use the patterns to calculate the number of...
Classifying Polygons: Lesson
4 mins 4th - 8th CCSS: Adaptable
For your eyes only: classify the names of polygons. After providing the definition of a polygon, the video introduces the two major classifications of polygons, concave and convex. The segment of a larger playlist on geometry continues...
Polygons-Changing Area Versus Changing Perimeter
5th - 8th CCSS: Designed
Investigate the area and perimeter of polygons in this geometry lesson. Young geometers use grid paper to draw a quadrilateral and calculate its area and perimeter. They also read The Greedy Triangle to identify the changing shape of...
Draw Polygons Using Given Coordinates as Vertices
4 mins 5th - 7th CCSS: Designed
At the end of the activity your learners will be able to classify a polygon by the number of ordered pairs given in a coordinate plane used as the vertices. this is the first video in a progressive series of four using geometry to solve...
What are Interior and Exterior Angles of a Polygon?
5 mins 6th - 10th
Break down interior and exterior angles with this video. Using a pentagon, a teacher demonstrates how to find the interior and exterior angles of a polygon. She goes on to explain a few of the properties of these angles, writing down all...
Perimeter and Area of Polygonal Regions in the Cartesian Plane
9th - 12th CCSS: Designed
How many sides does that polygon have? Building directly from lesson number eight in this series, learners now find the area and perimeter of any polygon on the coordinate plane. They decompose the polygons into triangles and use Green's...
Calculating and Measuring Perimeters of Polygons
3rd - 4th CCSS: Adaptable
If you're teaching 3rd or 4th grade math, this presentation is a must have. It defines perimeter and polygons, then describes the process by which perimeter is determined through pair share discussion and critical thinking questions....