Relate the sum of the angles in a triangle to the sum of the angles in polygons. 0606.4.2

Links verified on 4/20/2026

1. How to Determine the Sum of interior Angles for any Polygon - Learn about the interior and the exterior angles of a polygon.
2. How to solve problems involving interior angles of a polygon -
3. Measuring Angles - Practice lining up and reading a protractor while you measure a set of angles in a fun learning activity or
4. Polygon packet - PDF file to download. Worksheets on sums of exterior and interior angles.
5. Practice Question on Sum of Interior and Exterior Angles - Teacher led discussion of interior and exterior angles and how to come up with the sums.
6. Squaring the Triangle - Students learn about how the Pythagorean Theorem works, through investigating the standard geometric proof. Parameters: Sizes of the legs of the triangle.
7. Sum of Interior Angles in Polygons - In this video I go through how to calculate the sum of interior angles in polygons with different side lengths. I then go onto explain how we can create a general formula to use on any polygon.
8. Sum of Angles in a Polygon - Teacher led lesson covering: Types of Polygons, Types of Angles, Sum of Interior Angles, Sum of Exterior Angles
9. Sum of Angles in Polygons - IXL fill-in-the-blank quiz
10. Sum of Angles in Polygons - A polygon is a closed plane (flat) figure with straight sides. There is a way to measure the sum of the interior angles that depends upon the number of sides (which is the same as the number of angles). We show this and also investigate the exterior angles. Two practice questions are at the bottom of this page.
11. Use sum of interior angles of polygons - Worksheets to print and discuss.

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